问题

The first snow of every year is always so exciting, but too much snow _________ cause trouble

A:shall
B:need
C:can
D:must

正确答案是：

同类题型

My parents don’t allow me to watch TV, what should I do— ____________

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Her hair became gray ____ the passing ofthe years

How could you walk into the lab with your shoes?You’re________to take them off before you enter it.I told you so![ ]

The little girl kept _______ the house, because she wanted to keep it _________.