Is this school ______you studied in three years ago?
A．where B．that C．the one D．which
Mr．Wang ______ the person referred to at the meeting be put in prison．
A．said B．wished
C．agreed D．suggested
It is well known to all that water, ______ enough, can change into ice quickly．
A．if cooling B．though to be cooled
C．when cooled D．when is cooled
I would love ______ to the party that evening, but I had an unexpected visitor．
A．to go B．to have gone C．going D．having gone
Thomas _____ in inventing many electrical machines
A．was successful B．succeed C．was success D．successes
The Changjiang River has been polluted badly and is not good _______．
A．to swim it B．to be swum in
C．to swim in it D．to swim in
