—Where is Mother?—She is in the kitchen. She ______the housework all morning.
#99274
A
does
B
has been doing
C
has done
D
was doing
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Tom ______ with his grandmother for eight years，but now he is living by himself.
#100620
A
lives
B
1ived
C
has lived
D
has been living
Look! There is a whole crowd of people over there．Go and see what __________ and if it is a bargain，buy it．
#99582
A
is selling
B
has been selling
C
is being sold
D
has been sold
In order to reduce the increasing prices of vegetables，the toll(过路费) if a truck carrying them passes through a toll sration.
#99634
A
cancels
B
is canceiled
C
was cancelled
D
had been cancelled
The government has taken some measures to prevent more trees from _____.
#100712
A
cutting down
B
cut down.
C
being cut down
D
been cut down
It seems that water from this tap ________ for some time.We'll have to take it apart to put it right.
#99742
A
had leaked
B
is leaking
C
leaked
D
has been leaking