---Look! What a nice and clean toilet! ---Yes. It ______ every morning.
#37598
A
is cleaned
B
has been cleaned
C
is being cleaned
D
was cleaned
推荐题目
When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
What ____________ at nine o’clock last Sunday morning.?
#40551
A
was you doing
B
were you doing
C
are they doing
D
do you do
he girl sitting next to me on the plane was very nervous, for she before.
#36660
A
hasn’t flown
B
hadn’t flown
C
didn’t fly
D
wasn’t flying
—I called you yesterday evening, but there was no answer.—Oh, I’m sorry. I ________ dinner in my friend’s home.
#41832
A
have
B
will have
C
was having
D
have had