【推荐1】You ________ walk on the wet floor because you ________ fall and hurt yourself.

A．must; might not

B．mustn’t; might

C．needn’t; need

D．must; must

【推荐2】When we are on the bus, we ________ give our seats to the old people.

A．won’t

B．can’t

C．should

D．might

【推荐3】—Who is the girl in red dancing in the hall?
—It ________ be Lucy. Only she entered the hall this afternoon.

A．can

B．must

C．might

D．may

【推荐1】I need to pull myself away from the online world, especially because real life _________ be just as interesting.

A．can

B．should

C．shall

D．must

【推荐2】—The famous film The Pursuit of Happiness （《当幸福来敲门》）is on again. I think it tells us that everyone should always feel free to dream.
—I agree. Even if it is just a daydream, it ________come true someday.

A．can

B．could

C．may

D．must

【推荐3】—I wonder if the boy over there is your friend David.
—It ________ be him. He is much taller.

A．can

B．can’t

C．must

D．mustn’t

【推荐1】—I don’t know whose schoolbag it is. It _______ be Judy’s.
—OK. I’ll go to ask her.

A．can

B．need

C．must

D．might

【推荐2】—Whose English book is this?
—It _______ be Lily’s, but I’m not sure.

A．might

B．can’t

C．must

【推荐3】 You mustn’t go off on your own, because you ________ get lost in the mountains.

A．should

B．must

C．need

D．might