题目内容：

用括号中所给单词的适当形式填空。

1.The prices of many       (flower) usually go up during festivals.

2.This is the        (six) time for our school to hold the robot-making competition.

3.Larry has put on too much weight because of his       (health) diet.

4.Jack finds it difficult to pronounce some English words       (correct).

5.It is not wise for young people       ( change) their jobs from time to time.