问题
选择题
.He _____have solved all his probems; otherwise, he wouldn’t be so relaxed.
A．should
B．must
C．wouldn’t
D．can’t
答案
答案：B
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.He _____have solved all his probems; otherwise, he wouldn’t be so relaxed.
A．should
B．must
C．wouldn’t
D．can’t
答案：B