问题
选择题
It is usually cool in April in Chongqing, but it sometimes ______ be rather hot for a few days.
A．can
B．must
C．shall
D．ought to
答案
答案：A
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It is usually cool in April in Chongqing, but it sometimes ______ be rather hot for a few days.
A．can
B．must
C．shall
D．ought to
答案：A