—My teachers often encourage me ______ more friends but I find it difficult.—Your teachers’ idea is right. The more friends you make, ______ you will be.
__________he is ill, __________he goes to school.
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 ____________.