—What did you do yesterday?—My brother took two friends of ________ to play chess with us. But I don’t’ know _______ of them.
The story is about Lei Feng.It's very ______.
—Which is______,the sun,the moon or the earth? —Of course,the moon is.
I bought ______ for my son,but ______ for myself.
—______ you in America in 1999? —Yes, I ____________.
—______ does your mother go for a walk? —Every afternoon.