用所给单词的适当形式填空    

1. Mr Green              (appear) in over 40 movies so far.  

2. The great poet Yu Guangzhong has written lots of p____． 

3.The young man is the lead           (sing) in the band.  

4. Be sure____ (send)my best wishes to your parents.    

5. We must help those           (home) children because of the earthquake.

DDZ—Ⅱ型温度变送器迁移量不足或不能迁移，可能由哪些原因造成？