—Look! Somebody the sofa.—Well, it wasn’t me. I didn’t do it.
#101195
A
is cleaning
B
has cleaned
C
was cleaning
D
had cleaned
推荐题目
Great efforts to increase agricultural production must be made if food shortage _____ avoided.
#100844
A
is to be
B
can be
C
has been
D
will be
He____ as a national hero for winning the first gold medal for his country in the Olympics.
#104015
A
regarded
B
was regarded
C
has regarded
D
had been regarded
Having devoted his life to the realization of racial equality，former South African President Nelson Mandela＿＿＿on December S，2013．
#99772
A
passed away
B
had passed away
C
has passed away
D
passes away
— Lucy is not coming tonight. — But she _____!
#100029
A
promised
B
will promise
C
had promised
D
promises
Scientific experiments __________ by students without the teachers’ instructions can be dangerous.
#103839
A
carry out
B
carrying out
C
carried out
D
carrying