— Listen! Helen is singing in the classroom.—It ______

— Listen! Helen is singing in the classroom.—It _______ be Helen. She has gone to Shanghai.

#74428

mustn’t

may not

can’t

should

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You can not imagine that a well-behaved gentleman _______be so rude to a lady.

#63350

might

need

should

would

It’s difficult-------- me to learn English well.

#76982

with

for

——TV and computer are so popular these days.——Yes, they can ____ our eyes to the outside world.

#77015

call up

open up

turn up

take up

I always go to sleep ___________ the light on.

#75163

and

with

We        the difficulty together, but why didn’t you tell me?

#63184

need have faced

can have faced

could have faced

must have faced

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