问题

We should always keep the classroom ________ and tidy.
A:cleaning
B:cleaned
C:to clean
D:clean
B:cleaned
C:to clean
D:clean
正确答案是:
同类题型
“May I drink _______ water?” — “Sorry, I don’t have _____.”
Lucy’s room is the same size ______ Lily’s but her bed is different ________ Lily’s. [ ]
Jackie Chan donated _______ dollars to charity.. —He is an example to us all.
We will celebrate the 90th birthday of the Chinese Communist Party ______ July 1st, 2011. [ ]