－What did you do just now?
－I _____ to our teacher’s office.
A. go B. going C. to go D. went
Let’s go ________ _______ Sunday morning.
A. swim; in B. fishing; on C. boating; in D. to swim; in
Can you help me _______ this math problem?
A. solve B. solved C. solving D. solves
My brother has a lot of fun ______ English. He likes English very much.
A. learn B. to learn C. learning D. learns
Don’t worry! The bus is not _______ now. Each of us has a seat.
A. crowd B. crowded C. uncrowded D. busy
Danny did all kinds of things to make the baby _________
A. to stop crying B. stop crying
C. to stop to cry D. stop to cry
