1.You were ______(on / in) China ________(for / of) two _________(年).
2.There weren’t_____(一些)_____(鸭子)____(以前).
3._______(What / What’s) a big __________(操场)！
4.This bag is ________(重的). I ________(can / can’t)_______(提) it.
5.They ________(卖) different things _________(of / from) lots of __________(国家).
6.__________(有时) there are __________(饭馆)________(on / at) the supermarket.
7.They go to _________(people / people’s) houses ______(in / at) _______(夜晚).
8.Do you know _____(为什么)？