You have worked for a long time. You ___________

You have worked for a long time. You ____________ be very tired.

#74757

must

can’t

could

mustn’t

推荐题目

 —Look at the boy running on the ground. Is it David?—It      be him. I saw him go to the teacher’s office just now.

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must

mustn’t

can’t

might

That notebook _____  John’s. It has his name on it.

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canbe

mustbe

needbe

can’t be

Cheating is strictly forbidden in this important exam, and students ______ bring any reference books into their classrooms, cell phones included.

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will not

should not

mustn’t

need not

Li Lei isn’t ____ Liu Ming.

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tall as

as taller as

as tall as

as the taller as

As we’re students, we __________ obey the school rules.

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can

may

must

could