赞题库-背景图
单项选择题

When the students came into the classroom, the teacher ______ on the blackboard.

A．
[A] was writing

B．
[B] is writing

C．
[C] wrote

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热门试题

单项选择题--Would you like a bottle of mineral water-- ______.

A．
[A] Yes, I will

B．
[B] No, please

C．
[C] No, thanks

单项选择题--Your city looks beautiful!--Yes. Lots of trees and grass ______last year.

A．
[A] were planted

B．
[B] have been planted

C．
[C] planted