7．A:It happened that Peter was at home that day．B:Peterhappened to be at home that day．——青夏教育精英家教网——

7．A：It happened that Peter was at home that day．
B：Peterhappened to be at home that day．（happen）

6．A：You can ask your teacher for help you if you have trouble．
B：You canturn to your teacher for help if you are in trouble．（turn）．

5．I don't think he is a reliable person，for he seldom keeps his promises．

4．This problem can be solvedby pre-school children in 2minutes．

3．________ that troops of soldiers were sent to the front line to fight when two countries
were at war．（　　）

	A．	It makes no difference		B．	It is no use
	C．	There is no doubt		D．	There is no possibility

2．A：A man is not old until his regrets replace his dreams．
B：A man is not old until his regretstake the place ofhis dreams．（place）

1．A：The Chinese nation is a big united family，which is made up of 56nationalities．
B：The Chinese nation is a big united family，whichconsists of56nationalities（consist）

20．A：We don't realize how valuable something is until we have lost it．
B：It isnot until we have lost itthat we realize how valuable something is．（until）

19．A：The Voice of China attracts many people，young and old．
B：The Voice of Chinaappeals tomany people，young and old．（appeal）

18．A：Because of the heavy snow，he was late for the meeting yesterday．
B：His being late for the meeting yesterdaywas due to，the heavy snow．（due）

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