In much of the animal world, night is the time ____ for sleep —pure and simple.
A.set aside | B.set down | C.set off | D.set up |
You're the only person ______I've ever met ______could do it.
A.who;/ | B./; whom | C.whom;/ | D./; who |
.In our factory there are 2,000 workers, two thirds of ____are women.
A.them | B.which | C.whom | D.who |
The letter is from my sister, ______is working in Beijing.
A.which | B.that | C.whom | D.who |
—I‘d like a pen which _________ well.
—Will this one _________?
A.writes; do | B.writes; work |
C.is written; do | D.is written;work |
It was not until liberation that _________ to his hometown.
A.did he return | B.was he returned |
C.he did return | D.he returned |