A little child ______ to walk often falls.

A. learning
B. learn
C. to learn
D. learned

The tall man is a ______ student.

A. return
B. returned
C. returning
D. to return

The girl ______ next to me was my cousin.

A. is sitting
B. sit
C. sitting
D. to sit

She bought a computer ______ in China.

A. produce
B. producing
C. to produce
D. produced

I have just ______ a booth. (预定）

I think they are very ______. (专业)

May I know the ______ of the fair? (安排

The man ______a novel at the desk is my father. (read)

The boy ______ John is my friend.(name)