问题
选择题
The Chinese teacher looks so pale. She ___ be ill.
A．must
B．mustn’t
C．can
D．need
答案
答案：A
must 意为:一定.表示推测; mustn’t意为:不准; can表能力; need意为:必须.
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The Chinese teacher looks so pale. She ___ be ill.
A．must
B．mustn’t
C．can
D．need
答案：A
must 意为:一定.表示推测; mustn’t意为:不准; can表能力; need意为:必须.