Ladies and gentlemen, please fasten your seat belts. The plane _________.
| A．is taking off | B．takes off | C．has taken off | D．will be taken off |
It was by making great efforts_______she caught up with other students.
| A．how | B．when | C．what | D．that |
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 |
_______by the growing interest in nature, more and more people enjoy outdoor sports.
| A．Influenced | B．Influencing |
| C．Having influenced | D．To be influenced |
Tina was hesitation about the job offer as she did not knowthe company was an established one.
| A． | whether | B． | what | C． | until | D． | although |
_______some people some here for a short break , others have decided to stay forever.
| A．Because | B．If | C．Once | D．While |