I ________ a topic for the composition, but haven’t decided yet.
#100171
A
will think about
B
have been thinking about
C
had thought about
D
was thought about
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I _____ his telephone number. Had I known it, I would have rung him up.
#100016
A
don’t known
B
didn’t know
C
hadn’t known
D
haven’t known
By the time our teacher arrives tomorrow,all the work _____,with which he will be satisfied. 
#101348
A
is accomplished
B
will have been accomplished
C
will be accomplished
D
has been accompished
Mike        his wedding for a whole month and hopefully everything will be ready tomorrow.
#103203
A
prepares
B
is preparing
C
has prepared
D
has been preparing
Hurry! The plane ______ . You know, it ______at 3:15.
#100058
A
takes off, takes off
B
is taking off, takes off
C
takes off, is taking off
D
is taking off, is taking off