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---What’re you _____?---My husband’s health problem _____ me a lot.
#38644
A
worrying,worries
B
worried about,worries
C
worried about,worries about
D
worrying about,is worried about
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Since we ________ our homework now. Let’s have a rest.
#41543
A
do
B
are doing
C
will do
D
have done
When the teacher came into the classroom, the students ____ in groups.
#39479
A
work
B
have worked
C
were working
D
are working
—Everyone except the twins ____________ Beijing.—Oh, their mother is ill, so they have to look after her.
#36180
A
have been to.
B
have gone to.
C
has been to.
D
has gone to.
When you        at a restaurant, please order just enough food.
#39057
A
ate
B
will eat
C
eat
D
have eaten
When I got there, the train _____________.
#39994
A
has left
B
left
C
had left
D
have left