31．Is this the reason 　　　　　at the meeting for his carelessness in his work?

　　 A．he explained　　　　　　　　　　　　　　　　　　　　 B．what he explained

　　 C．how he explained　 　　　　　　　　　　　　　　 D．why he explained

30．He ______ some French while he was away on a business trip in Paris．

　　　 A．made out　 　　　　 B．picked up　 　　　 C．gave up　 　　　　　 D．took in

29．-What do you imagine ______her so sad?

　　 -Losing her new storybook．

　　　 A．to make　 　　　　　 B．make　　　　 C．making　 　　　　　　 D．has made

28．A friend of ______ went to the railway station to see ______．

　 　　 A．Rebecca; her off 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B．Rebecca; off her

　　　 C．Rebecca’s; her off　 　　　　　　　　　　　　　　 D．Rebecca’s off her

27．- Is this raincoat yours?

- No, mine_____ there behind the door．

　　 A．is hanging 　　　　　 B．has hung　　 　　　 C．hangs　　 　　　　　 D．hung

26．-Did you walk to school this morning?

　　 -No, we went by bus _____．

　A． instead of feet　　 B． instead walking C．instead of on foot 　D．instead on foot

25．Sally worked late in the evening to finish her report _　 _ her boss could read it first thing next morning．

　　　 A．so that　　　　 B．because　　　 　 C．before　　　　 D．or else

24．His mother had thought it would be good for his character to ____ from home and earn some money on his own．

　　 A．run away　 　　　　 B．take away 　　　　　 C．keep away 　　　　 D．get away

23．Rather than ______ on a crowded bus, he always prefers　a bicycle．

　　 A．ride; ride　　　 B．riding; ride　 　　　 C．ride; to ride 　　　　 D．to ride; riding

22．Every possible means ___ to prevent the air pollution, but the sky is still not clear．

　　　 A．is used　　　　 　 B．are used　　　 　 C．has been used 　　 D．have been used