单项选择题

I was really anxious about you. You______home without a word.

A．mustn't leave
B．shouldn't have left
C．couldn't have left
D．needn't leave
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单项选择题
The______house smells as if it hasn't been lived in for years.
A．little white wooden
B．little wooden white
C．white wooden little
D．wooden white little
单项选择题
______many times, he still doesn't know how to use the computer.
A．He has been told
B．We have told him
C．Having been told
D．Having told him
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