—Bill，can I get you anything to drink?
—________.
| A．You are welcome | B．No problem |
| C．I wouldn’t mind a coffee | D．Doesn’t matter |
The science of computer, rapid progress has been made in recent years，plays a very important role in our daily life．
| A．from which | B．in which |
| C．with which | D．to which |
Since you have such good preparations, there ______ be any problem about passing the
coming job interview.
| A．mustn’t | B．shan’t |
| C．shouldn’t | D．needn’t |
— How long do you suppose it is ______ he arrived here？
— No more than half a week.
| A．when | B．before | C．after | D．since |
— Could you meet me at the airport?
— I'd like to，but I'm afraid I ______ a very important meeting when you return.
| A．am attending |
| B．was attending |
| C．will be attending |
| D．will have attended |
Experts warn that global warming will cause extreme climate changes including more______ floods, heat waves and droughts.
| A．usual | B．ordinary | C．frequent | D．common |