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—Why is the classroom so dirty?—Sorry，sir. It       yesterday, We forgot to do it.
#39874
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
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—Where is Ms Li?—She          London.
#40228
A
went to
B
has went to
C
has gone to
D
has been to
— Jim, get up！It's already 9：00 in the morning．— Really? I ________ too much．
#36518
A
slept
B
am sleeping
C
have slept
D
sleep
It’s ten o’clock. Betty _______ piano.
#42454
A
is playing
B
plays
C
is playing the
D
plays the
Suzy can get better results in geography if she _________her best.
#41668
A
do
B
does
C
will do
D
is going to do
Have you ever ________ the Great wall?
#40391
A
been to
B
gone to
C
go to
D
been