He is the only one of the people here who ____ how to operate the computer.
#85796
A
knows
B
know
C
had known
D
known
推荐题目
Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#85598
A
has been used
B
have been used
C
is used
D
are used
In those days John with his classmates _____ kept busy preparing for the exam.
#86061
A
is
B
are
C
was
D
were
He is not very tall, and he is not very short.He is .
#43452
A
heavy
B
of medium build
C
of medium height
D
small
John as well as the other children _____good care of in the village.
#85794
A
has taken
B
is being taken
C
is taken
D
have been taken