单项选择题

______ late in the morning, Bob turned off the alarm.

A．To sleep
B．Sleeping
C．Sleep
D．Having slept
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单项选择题
The film I saw yesterday is the best one ______ I've ever seen.
A．which
B．that
C．what
D．of which
单项选择题
News reports say peace talks between the two countries ______ with no agreement reached.
A．have broken down
B．have broken out
C．have broken in
D．have broken up
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