单项选择题

Mark offered to help me to learn English （）.

A．on duty
B．in vain
C．on purpose
D．in earnest

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单项选择题

From now on I want you to keep me （） of how things are going on with you.

A．to inform
B．informed
C．informing
D．be informed

单项选择题

This multiple choice test （） 35 incomplete statements, please choose A, B, C or D to complete them.

A．is composed of
B．consists in
C．makes up
D．makes use of

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