5．They haven't settled the problem of it is necessary for her to take part in China Voice ．( ——青夏教育精英家教网——

5．They haven't settled the problem of ______ it is necessary for her to take part in"China Voice"．（　　）

4．Last month，the researchers undertooka new project studying the effects of smoking on old people．

3．Nowadays，the issue of AIDS orphans must be addressedproperly before it's too late．

2．There is no denying that mobile phones have the potential to become the most influential media．

1．Everyone really enjoyed the film adaptation of the novel Journey to the West．

20．In the last one hundred years，many different kinds of electronicdevices have been invented，such as computers and mobile phones．

19．The drug，which is suspected of having serious side effects，has beenwithdrawn（撤出） from the market．

18．Nowadays an increasing number of people prefer to live in the country because they believe fresh air isbeneficial （有益）to their health．

17．All these plans shall be carried out upon theapproval （批准） of the board of directors．

16．We have to make sure that our food isabundantly （充裕地） supplied when in winter．

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