1) irritating
2) wither, decay
3) insincere (Note: "insincere" is not in the provided word list. The closest fitting word from the list for pretending to be nice is "decant", but it is incorrect. A correct answer from the list would be "doubtful" or "hesitated", but neither fits perfectly. Given the context, "insincere" is the intended meaning, but since it's not an option, this might be an error in the worksheet. For the sake of completing the task with the given words, "doubtful" could be勉强 chosen, but it doesn't fit well. Alternatively, if we must choose from the list, perhaps "neglected" or "typical" are misfits. This question may have a typo or missing word. However, since I must provide an answer from the list, and none truly fit, I will select "doubtful" as the least incorrect, though it's not ideal.)
4) sighed
5) typical
6) decent
7) transition
8) hesitated
9) frost
Parent Tip: Review the logic above to help your child master the concept of 6th grade vocabulary practice worksheet.