_____by the running , they went on running after the thief.
| A．Exhausting | B．Having exhausted | C．Exhausted | D．To exhaust |
Why________ you always leave your dirty clothes in the bedroom?
| A．need | B．must | C．can | D．shall |
“ Have you ever been to Beijing?” “No, but I wish I________.”
| A．have | B．will | C．do | D．had |
He felt______ duty to work for human rights and progress.
| A．it his | B．his | C．that is a | D．it is his |
Was it in 1997______he was still at middle school_______ this boy became an expert at computer?
| A．that; where | B．when; where |
| C．in which; in which | D．when; that |
------What do you think made Mary so upset?
-------- _________her new bicycle.
| A．As she lost | B．Lost | C．Losing | D．Because of losing |