3．当我到家时，我意识到我把钥匙忘在车里了。

When I _________ home，I _________ I _________ _________ my keys in the car．

2．村里人都装扮成士兵出发了。

All the people in the village _________ _________ as soldiers and _________ _________．

1．他的自行车总是坏，所以他决定买一辆新的。

His bike always _________ _________，so he has decided to buy a _________ _________．

15．_________(ask)for information or help is a very common and necessary activity．

14．When somebody plays a joke on me，I always feel _________(embarrass)．

13．--What would you do if you won a million yuan?

--I would give it to _________(medicine)research．

12．My sister fell off the bike on the playground and hurt _________(she)just now．

11．We know our English teacher is a _________(know)man．We all like asking him lots of questions and he can answer all of them．

10．Don't t_________ litter everywhere in the school．We must keep our school clean，and tidy．

(C)根据句意，用所给单词的适当形式填空。

9．That beautiful red car b_________ to my aunt．