Normally this street every week, but nobody swept it last week.
A. sweeps
B. is swept
C. is sweeping
D. has swept
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We request the committee our arrangements again.
A. discussing
B. discuss
C. discussed
D. will discuss
He said that he had to do with the accident, so he should not be questioned.
A. nothing
B. anything
C. something
D. everything
Students must learn the ____________ courses well before they can continue the advancedones.
A. basis
B. based
C. base
D. basic
Hurry up! _________ we'll miss the bus.
A. So
B. Otherwise
C. But
D. Because