After the accident, she had some difficulties _______ recalling what had happened _______ her.
| A．on; to | B．on; on | C．in; to | D．in; on |
Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver _____ obey in this city.
| A．shall | B．can | C．ought to | D．need |
— I’m terribly sorry that I have forgotten the reference book you lent me yesterday.
— ________!
| A．Never mind | B．Not at all | C．You’re welcome | D．With pleasure |
It was when I searched the Web for some information about my classmates that I __ your website.
| A．came about | B．came after | C．came at | D．came across. |
— People says your little brother has been admitted into Qinghua University.
— Yes. Never ________ he could achieve so much success.
| A．I had thought | B．I would have thought |
| C．could I have thought | D．will I have thought |
We all know laws to discourage the use of plastic bags _______ in many parts of the world.
| A．passed | B．have passed | C．had been passed | D．have been passed |