What did you do yesterday?—My brother took two friends of ________ to play chess with us. But I don’t’ know _______ of them.

hat do you think of genetically modified food (转基因食品)? —We all think ______ is careless ______ some scientists to say it is safe before doing any experiment.

I’m hungry, ______ me my lunch.

What’s _______ weather like today?- It’s _______ beautiful spring day!

Shall we buy a present _____ him?[ ]