14-15高一上·重庆·期末
1 . Mountain climbing ______ be really dangerous at times even though it is challenging and exciting in general.
A.can | B.should | C.shall | D.must |
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14-15高二上·浙江温州·期末
2 . Tom ____ be ill, for I saw him playing basketball an hour ago.
A.mustn’t | B.needn’t | C.can’t | D.may not |
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