A.went | B.had been | C.should go | D.would have gone |
A.shouldn’t shout | B.shouldn’t have shouted |
C.mustn’t shout | D.mustn’t have shouted |
A.be guaranteed | B.guaranteeing | C.should guarantee | D.must be guaranteed |
A.was operated | B.be operated | C.should operate | D.operated |
A.was; gave up | B.be; should give up | C.should be; gave up | D.was; give up |
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