Tom ______ in the library every night over the last three months.
| A．works | B．worked | C．has been working | D．had been working |
The doctor is not quite sure about what ________ the head injury will have on the patient. It may even cause brain damage.
A affect B effect C affection D effective
Interest, as well as prospects(前景)， important when one looks for a job.
A are B were C is D was
It is generally considered unwise to give a child _____he or she wants.
A however B whatever C whichever D whenever
The number of traffic accidents that _______ in developing countries _______ increasing.
| A．happen; is | B．happens; is | C．happens; are | D．happen; are |
--- Would you do me a favor and carry these books?
--- ________.
| A．Yes, that’s right | B．No trouble | C．No wonder | D．With pleasure |