it's time __us __have class A.to,for B.for to C.for for Dto to

问题描述:

it's time __us __have class A.to,for B.for to C.for for Dto to

B It's time for us to have class.我们该上课了

B for to
现在是我们上课的时间了。
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B it's time for sb to do sth 固定搭配,是某人做某事的时间了