问题

Didn’t you notice Ted pass by — No, I _______ the chalk off the blackboard.

A:was cleaning
B:cleaned
C:am cleaning
D:clean;

正确答案是：

同类题型

Are you worried about her safety? —Just_______ She isn’t alone

Observation, reason and experiment make up ______ we call the scientific method.

do youthink of Thomas —Well, he is good, warm-hearted, hard-working andintelligent; _______, I can’t speak too highly of him

say two hours, _____ includes timefor eating.

Russia won the host right of the 2018 WorldCup Englandlost it on December 2