单项选择题

Professor Smith as well as his children _________on running every morning.

A．keep
B．keeps
C．keeping
D．kept
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单项选择题
Peter had no idea how long will he spend there _________he got the order.
A．while
B．until
C．after
D．when
单项选择题
Don''t have the water _________all the time while you are out.
A．running
B．run
C．runned
D．runs
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