The poor boy ---- the test again; in that case,his mother wi

The poor boy ____ the test again; in that case,his mother will be very disappointed.
a.must have failed B.might fail C.could have failed D.should fail
9.--- Why ____ it rain now?I ___ go to the concert at 7.
--- What a pity!
A.can; might not B.should; needn’t C.must; can’t D.need; mustn’t
10.-- We need some fresh air,but the window open.
-- _____I help you
A.didn't; Will B.shan't; Need C.mustn't ; May D.won't; Shall
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