1. (2016·南通) 请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。

wait       practice      give       serve       return

1. （1） Mum will not let Simon go out next time unless he  home before dark．
3. （2） —Who  us a talk on how to protect the environment next Monday？

   —Mr. Smith is．

5. （3） We are sure that he will win the game because he  a lot for it．
7. （4） ─What's wrong with you，Jane？

   ─I'm a little sick and I  for Dad to take me to the hospital．

9. （5） Tim is a manager now，but he once  as an engineer for five years．