Our classroom is tidy because it ____ every day.
#44421
A
cleans
B
cleaned
C
is cleaned
D
was cleaned
推荐题目
— Were you allowed to go to your cousin’s birthday party?—No, I        .
#44653
A
am not invited
B
haven’t invited
C
didn’t invite
D
wasn’t invited
Great changes _______ in our country since 1990.
#44952
A
were taken place
B
took place
C
have taken place
D
have been taken place