单项选择题

I didn' t hear the sound, so I ______ asleep.

A．must be
B．must have been
C．should be
D．should have been
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单项选择题
I didn' t go with them to the beach yesterday. But I do wish I ______ there.
A．had been
B．have been
C．was
D．am
单项选择题
The report showed us very clearly how the plane got ______ and crashed in the end.
A．out of control
B．under control
C．into control
D．within control
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