They were required ________ singing before the competition.
A.practice B.practicing C.to practice D.practiced
Can I borrow your bike? I promise ________ it on time.
A.return B.to return C.returning D.returned
I get used to ________ down the notes, so I can find some important points after class.
A.to write B.writing C.write D.writes
Although the movie is a little long, it's worth ________.
A.to watch B.watching C.watched D.watch
Mary is a kind girl. She often tries her best ________ me when I am in trouble.
A.to help B.helping C.help D.helped
It takes about 30 minutes _______ a bicycle from my home to school.
A.ride B.riding C.to ride D.rides
