Our classroom          by us every day!
#38468
A
is cleaning
B
has cleaned
C
must clean
D
is cleaned
推荐题目
While I ________to the programs, my mother ________outside.
#38019
A
listened; was washing
B
was listening; washed
C
was listening; was washing
D
was listening; is washing
I ____my CD here and there, but I still can’t find it.
#42598
A
have looked for
B
look for
C
will look for
D
was looking for
In New York I found my friend Collins, who       there some time before me.
#40368
A
would arrive
B
has arrived
C
had arrived
D
was arriving