单项选择题

The steam engine gives us an example of heat ______ into work.

A．turns
B．turned
C．turning
D．being turned
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单项选择题
A Russian-made rocket ______ a US telecommunications satellite ______ successfully ______ on Thursday.
A．carrying; is; launched
B．carrying; was; launched
C．carried; has; launched
D．carried; has been; launched
单项选择题
No one had told Smith about ______ a lecture the following day.
A．there be
B．there being
C．there would be
D．there was
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