Three grammar exercises focusing on the use of "used to" and "didn't use to" to describe past habits and changes in behavior.

Exercise 1: Complete these sentences with "used to + a suitable verb"

The task is to complete the sentences using the structure "used to + a suitable verb." Here are the solutions:

#### a) Muna _______ a motorbike, but she sold it and bought a car.
- Solution: Muna used to ride a motorbike, but she sold it and bought a car.

#### b) I rarely go to the cinema now, but I ______ often a few years back.
- Solution: I rarely go to the cinema now, but I used to go often a few years back.

#### c) Liz and I ______ fast friends but we aren’t any longer.
- Solution: Liz and I used to be fast friends but we aren’t any longer.

#### d) There ______ a few vehicles in Kathmandu. Now, there are innumerable vehicles.
- Solution: There used to be a few vehicles in Kathmandu. Now, there are innumerable vehicles.

#### e) It takes me 20 minutes to get to school now, but it ______ more than an hour before my father got me a motorbike.
- Solution: It takes me 20 minutes to get to school now, but it used to take more than an hour before my father got me a motorbike.

#### f) We came to Kathmandu a year back. We ______ in Pokhara.
- Solution: We came to Kathmandu a year back. We used to live in Pokhara.

---

Exercise 2: Compare what Mr. Gurung said five years ago and what he says today

The task is to compare Mr. Gurung's statements from five years ago and today, and write sentences about how he has changed using the structure "He used to... but he doesn't... now."

#### a) He ______ but ______.
- Five years ago: I smoke a lot.
- Today: I don’t keep a parrot now.
- Solution: He used to smoke a lot but he doesn’t smoke now.

#### b) He ______ but ______.
- Five years ago: I’m very lazy.
- Today: I love volleyball now. It’s a great game.
- Solution: He used to be very lazy but he doesn’t love volleyball now.

#### c) He ______ but ______.
- Five years ago: I don’t like to drink.
- Today: I smoke no more.
- Solution: He used to not like to drink but he doesn’t drink now.

#### d) He ______ but ______.
- Five years ago: I have a parrot.
- Today: I’m active and take part in every activity now.
- Solution: He used to have a parrot but he doesn’t have a parrot now.

#### e) He ______ but ______.
- Five years ago: I don’t play volleyball.
- Today: I read a lot of books now.
- Solution: He used to not play volleyball but he doesn’t play volleyball now.

#### f) He ______ but ______.
- Five years ago: I am a late riser.
- Today: I rise early and exercise now.
- Solution: He used to be a late riser but he doesn’t rise early now.

---

Exercise 3: Write sentences about Hari using 'used to' and 'didn’t use to'

The task is to write sentences about Hari based on the changes in his lifestyle using the structures "used to" and "didn’t use to."

#### Example:
- He used to labour at his studies.
- He didn’t use to drink.

#### a) He stopped: labouring at his studies.
- Solution: He used to labour at his studies.
- Solution: He didn’t use to drink.

#### b) He stopped: helping his friend.
- Solution: He used to help his friend.
- Solution: He didn’t use to go out to parties often.

#### c) He stopped: writing home.
- Solution: He used to write home.
- Solution: He didn’t use to spend lots of money.

#### d) He stopped: being active.
- Solution: He used to be active.
- Solution: He didn’t use to get up late.

#### e) He stopped: going to school.
- Solution: He used to go to school.
- Solution: He didn’t use to deceive friends.

---

Final Answers:

#### Exercise 1
a) Muna used to ride a motorbike, but she sold it and bought a car.
b) I rarely go to the cinema now, but I used to go often a few years back.
c) Liz and I used to be fast friends but we aren’t any longer.
d) There used to be a few vehicles in Kathmandu. Now, there are innumerable vehicles.
e) It takes me 20 minutes to get to school now, but it used to take more than an hour before my father got me a motorbike.
f) We came to Kathmandu a year back. We used to live in Pokhara.

#### Exercise 2
a) He used to smoke a lot but he doesn’t smoke now.
b) He used to be very lazy but he doesn’t love volleyball now.
c) He used to not like to drink but he doesn’t drink now.
d) He used to have a parrot but he doesn’t have a parrot now.
e) He used to not play volleyball but he doesn’t play volleyball now.
f) He used to be a late riser but he doesn’t rise early now.

#### Exercise 3
a) He used to labour at his studies.
He didn’t use to drink.
b) He used to help his friend.
He didn’t use to go out to parties often.
c) He used to write home.
He didn’t use to spend lots of money.
d) He used to be active.
He didn’t use to get up late.
e) He used to go to school.
He didn’t use to deceive friends.

Final Answer:
\boxed{
\text{See detailed solutions above.}
}