—Boy, you _______ lean (伸) out of the window while the bus is running. That’s dangerous.—Sorry, I won’t do that again.
#74149
A
needn’t
B
oughtn’t
C
couldn’t
D
mustn’t
推荐题目
You keep quiet in the library because everyone is reading here.
#75771
A
may
B
should
C
mustn’t
D
needn’t
—Must we finish our homework today? —No, you . You finish it the day after tomorrow.
#74977
A
needn’t; must
B
mustn’t; can
C
needn’t; can
D
mustn’t; can
Mr. Bush is on time for everything. How ____ it be that he was late for the important meeting?
#62618
A
can
B
should
C
may
D
must