Don’t make a noise! They _______on a physics problem now.
#41516
A
will work
B
are working
C
worked
D
have worked
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Not only his parents but also his brother to the Summer Palace. They will be back next week.
#42473
A
have been
B
have gone
C
has gone
D
has been
—Have you mended your shoes, Bob？—Yes, I _________ them twenty minutes ago ．
#36664
A
have mended
B
mend
C
had mended
D
mended
—Do you have any problems if you ______ five minutes to read?—Well, I’m thinking about the new words. There are too many.
#39487
A
give
B
are given
C
will be given
D
gave
-- Have you ever been to Shanghai, Mary? -- Yes. I _______ there for three clays with my parents last month.
#42741
A
have gone
B
have been
C
went
D
was
It when I my homework last night.
#40154
A
raining, did
B
rained, was doing
C
was raining, do
D
rains, was doing