题目内容
桳ook at the bag on the ground. It _______ yours.
桸o, it isn't _______ . It's Mary's.
A. must be; my
B. must be; mine
C. may be; my
D. needn't be; my
答案：B
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题目内容
桳ook at the bag on the ground. It _______ yours.
桸o, it isn't _______ . It's Mary's.
A. must be; my
B. must be; mine
C. may be; my
D. needn't be; my