Theywill fly to Washington，__________ they plan tostay for two or three days.
| A．where | B．there | C．which | D．when |
173. One of my Japanese friends sent me two _____, but I didn’t accept them.
| A．jewels | B．jewel | C．jewelry | D．Jewelries |
172. Since the disaster of September 11, American economy has got into a jam. The underlined part probably means _____.
| A．had a lot of trouble | B．become very good | C．got into a stop | D．developed rapidly |
171. You should put down your jacket, otherwise both of you will have a quarrel. That will make things worse. The underlined part probably means _____.
| A．wear your jacket | B．take off your jacket | C．not be excited | D．throw away the jacket |
170. So long as you work hard enough, a(an) _____ rod can be ground into a needle. (prov.)
| A．steel | B．stick | C．gold | D．Iron |
169. The people performing all play different _______ and three of them sing, too.
| A．tools | B．musical machines | C．instruments | D．Means |