问题描述：
1、The book has been translated into thirty languages since it （C）on the market in 1973.
A.had come B.has come C.came D.comes
2、In the past few years,My Heart Will Go On was a popular song among young people,（A）were often heard singing it at parties.
A.who B.which C.they D.that
3、Try not to cough more than you can（D）since it may cause problems to your lungs.
A.check B.allow C.stop D.help
4、After days of search,the police have found（C）is considered to be the lost antique.
A.which B.where C.what D.how
5、Anyone,once（A) positive for H7N9 flu virus,will receive free medical treatment from our government.
A.tested B.being tested C.to be tested D.to test
6、At the end of the meeting,it was announced that an agreement （B).
A.has been reached B.had been reached C.has reached D.had reached
A.had come B.has come C.came D.comes
2、In the past few years,My Heart Will Go On was a popular song among young people,（A）were often heard singing it at parties.
A.who B.which C.they D.that
3、Try not to cough more than you can（D）since it may cause problems to your lungs.
A.check B.allow C.stop D.help
4、After days of search,the police have found（C）is considered to be the lost antique.
A.which B.where C.what D.how
5、Anyone,once（A) positive for H7N9 flu virus,will receive free medical treatment from our government.
A.tested B.being tested C.to be tested D.to test
6、At the end of the meeting,it was announced that an agreement （B).
A.has been reached B.had been reached C.has reached D.had reached
问题解答：
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