My parents________for fifteen years．
A.married
B．got married
C．have married
D．have been married
This math problem is as________as that one．I can’t work it out．
A．difficult
B．more difficult
C．most difficult
D．the most difficult
The boy likes to play tricks________the girls．So they don’t like him．
A．with
B．as
C．to
D．on
I waited for my friend for a long time at the bus station，but she didn’t________at last．
A．show up
B．look up
C．think up
D．cheer up
Please ask them________for the meeting next time．
A．not be late
B．to not be late
C．don’t to be late
D．not to be late
I________all the exercises before my teacher collected the exercise books．
A．have finished
B．finished
C．had finished
D．finish
