– Why does she look so tired?-- She ________ all the morning and she still hasn’t finished it.
#104525
A
cleaned
B
was cleaning
C
has been cleaning
D
has cleaned
推荐题目
—Why does the lake smell terrible?—Because large quantities of water_______________.
#99629
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
—— Did he notice you enter the room? —— I don’ t think so.He＿＿＿＿＿to the radio with his eyes shut.
#104664
A
listened
B
was listening
C
has listened
D
had listened
(2013·郑州二模)A college is going to ________ a student's ability based on grades and then make the decision to admit or refuse an applicant.
#99558
A
experiment
B
parallel
C
assess
D
observe
--Our English teacher is back home from Britain now.--Yes, she _____there for just three months.
#100924
A
has been
B
had been
C
is
D
was
The famous reporter, who is said to have gone back to America last year, _____in China for almost twenty years.
#101952
A
lived
B
was living
C
has lived
D
had lived