A.that B.which C.whose
单项选择题Before she left on the trip, she()hard.
A.had trained; B.has trained C.would trained
单项选择题A lecture hall is()where students attend lectures.
A.that B.one; C.which
单项选择题I have lived here()1997.
A.for B.since C.from
单项选择题Before I got to the cinema, the film()
A.had begun B.has begun C.is begun
单项选择题You()to lock the door at night.
A.shall B.ought C.must
单项选择题Silk()by Chinese for thousands of years now.
A.has been used B.was used C.is used
单项选择题he patient acted on the doctor's ()and finallyrecovered.
A.advices B.advise C.advice
单项选择题Let me()the case carefully before I draw a conclusion.
A.look out B.look into C.look after
单项选择题More and more people in China now()to work regularly.
A.drive B.drives C.have driven
单项选择题The sun heats the earth,()is very important to living things.
A.that B.what C.which