He is very tired, so he needs some time __________ duty for relaxation and rest.
A. through B. from C. with D. off
I've known Sarah for nearly ten years. She __________ once my customer.
A. is B. has been C. was D. had been
—You look sleepy today.
—__________ not to miss the flight, I didn't dare to close my eyes the whole night.
A. Reminded B. Being reminded
C. Reminding D. Having reminded
They will run an after-class club __________ kids can have fun and learn
how to protect themselves.
A. that B. when C. where D. what
They have leading experts in this field, and that's ____ they've made important progress.
A. where B. why C. whether D. who
I've heard that preparations___ for the coming festival. Let's give them a hand.
A. are being made B. have been made
C. are making D. have made
