单项选择题

"I (am looking) forward (to) (receive) your letter!" she said (happily).

A．A
B．B
C．C
D．D
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单项选择题
The seventeenth century was one (which) many significant (advances) (were made) (in both) science and philosophy.
A．A
B．B
C．C
D．D
单项选择题
The room, (which) window (faces) the south, is (the nicest) one of all (on) this floor.
A．A
B．B
C．C
D．D
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