问题
选择题
His parents have bought a large house with a beautiful garden. It ______ be very expensive. [ ]
A. must
B. can
C. mustn't
D. can't
答案
答案：A
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His parents have bought a large house with a beautiful garden. It ______ be very expensive. [ ]
A. must
B. can
C. mustn't
D. can't
答案：A