Ernest visited the South Pole because he wanted to see one of the          regions in the world.

A．colder         B．coldest           C．more coldly         D．most coldly

It is important to know about the cultural differences that        cause problems.

A．must            B．dare          C．need            D．may

We       on our project day and night in the past two weeks.

A．had worked          B．have worked         C．will be working         D．has been advised

The employees        that they should renew their contracts within a week.

A．a(chǎn)dvise            B．have advised           C．a(chǎn)re advised             D．had been advised

        well in an interview will be an important part of getting a place at university.

A．Do         B．Doing         C．Done           D．Being done

       some people some here for a short break , others have decided to stay forever.

A．Because           B．If          C．Once             D．While

Tina was hesitation about the job offer as she did not know          the company was an established one.

A．whether          B．what           C．until           D．a(chǎn)lthough

       by the growing interest in nature, more and more people enjoy outdoor sports.

A．Influenced                                                 B．Influencing

C．Having influenced                                       D．To be influenced

        as an Olympic event, a sport must be played in at least 75 countries on at least 4 continents.

A．To accept         B．Having accepted           C．To be accepted          D．Accepting

It was by making great efforts          she caught up with other students.

A．how          B．when             C．what             D．that