Don’t turn off the computer before closing all programs     you could have problems
#86872
A
or
B
and
C
but
D
so
推荐题目
On AIDS Day, President Hu Jintao demanded that the problems _________ paid special attention to.
#87359
A
referred to being
B
referred to be
C
refer to being
D
refer to be
. He hesitated for a moment before kicking the ball, otherwise he ____ a goal.
#88160
A
had scored
B
scored
C
would score
D
would have scored
You _________ be right, but I don’t think you are.
#89118
A
can
B
could
C
must
D
should
—What caused the accident?—It was my fault, sir. I _____ to the left.
#89511
A
ought not to have turned
B
needn’t have turned
C
shouldn’t turn
D
couldn’t turn