单项选择题

If you are worried （） the problem, you should do something about it.

A．with
B．for
C．on
D．about

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So （） after she learned the good news that she could hardly fall asleep that night.

A．excited the mother was
B．was the mother excited
C．the mother was excited
D．excited was the mother

单项选择题

Li Lei didn't meet the famous American professor （） he was on holiday in America last year.

A．unless
B．until
C．if
D．whether

单项选择题

We could not have fulfilled the task in time if it （） for their help.

A．was not
B．is not
C．had not been
D．has not been

单项选择题

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A．am leaving
B．will leave
C．shall have left
D．had left

单项选择题

The hotel （） during the vacation was rather poorly managed.

A．as I stayed
B．where I stayed
C．which I stayed
D．what I stayed

单项选择题

This ATM has been out of service for a few days. It should （） last week.

A．fix
B．be fixed
C．have fixed
D．have been fixed

单项选择题

I stayed up all night （） to find a new solution to the problem.

A．trying
B．have tried
C．try
D．tried

单项选择题

（） with the developed countries, some African countries are left far behind in terms of people's living standard.

A．Compare
B．To compare
C．Compared
D．Comparing

单项选择题

（） he is still working on the project, I don't mind when he will finish it.

A．In case
B．As long as
C．Even if
D．As far as

单项选择题

If you are worried （） the problem, you should do something about it.

A．with
B．for
C．on
D．about