30．　　　　 to use last month, the new machine has been solving the problems easily.

　　　 A．Put 　 B．Putting　　 C．Having put　　　 D．Being put

29．The farm　　　　 we learned to feed cattle two years ago has changed a lot.

　　　 A．when B．which　　　 C．that　 D．where

28．I wonder why Jack always gets good marks when he does only　　　 the others.

　　　 A．half as much as　　　 B．as much as half C．half as many as D．as　 many as half

27．Don’t tell him the good news until the match　　　　 . Otherwise he’ll be too excited to concentrate on the match.

　　　 A．will be finished　　　 B．has finished　　　 C．is finished D．finished

26．-Say less about yourself, and more about　　　　　 your teammates have done.

　　　 -I will.

　　　 A．which　　　 B．why　 C．that　 D．what

25．　　　　 with designing the bridge, the engineer has no time to take care of his sick mother.

　　　 A．Occupied　 B．Having occupied　　　 C．Occupying　　　 D．To occupy

24．This is the time-I’m at the reception hall. The guests　　　　 arrive at any moment.

　　　 A．must B．need　 C．should　　　 D．can

23．David applied for the position three times　　　　 he finally got it.

　　　 A．until　 B．when C．before　　　 D．after

22．By no means　　　　　 to go hiking this weekend. She has too much homework to do.

　　　 A．will Jane agree　　　　 B．Jane will agree

　　　 C．Jane will disagree　　　　　 D．will Jane disagree

21．-How did it come that you damaged your car so badly?

　　　 -I　　　　 into a tree on the roadside the other day.

　　　 A．ran 　 B．had run　　 C．was running　　 D．run