This is _______ empty bottle. But it is _______useful one.
I usually go to bed _______ ten o’clock.
----What’s the time? ----It’s _______ three thirty.
About five _______ students take buses to school in my school.
Who wants ______ the singing club?A. to joins B. join C. joining D to join
----Can you play the drums ______ the pianos? ----I can play the drums.