单项选择题

You cannot but ______ hard and stick to your goals if you really want to succeed.

A．work
B．to work
C．working
D．to Be working
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单项选择题
Papers ______ in pencil don't count.
A．to write
B．writing
C．written
D．to have written
单项选择题
After queuing for 8 hours, ______.
A．the tickets were sold out
B．we did not get any tickets
C．rain started pouring down
D．our legs got sore and swollen because of standing for too long
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