单项选择题

The book is said ______ into many languages.

A．to translate
B．to have translated
C．have been translated
D．to have been translated
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单项选择题
This is the microscope ______ which we have had so much trouble.
A．at
B．from
C．of
D．with
单项选择题
Three new buildings ______ on the campus by the end of this year.
A．will be built
B．are going to be built
C．will have been built
D．have been built
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