Fever _______ sickness. You should see a doctor at once.
| A．explains | B．informs |
| C．introduces | D．indicates |
It was the first time that I ______ the movie, and I fell in love with it at once.
| A．am watching | B．was watching | C．have watched | D．had watched |
I am determined to get a ticket for the concert ____ it means standing in a line all night.
| A．as though | B．even if | C．as if | D．so that |
It was because of the bad weather _________ the football match had to be put off.
| A．so | B．so that | C．why | D．that |
Professor Lee failed many times but he ________found a good way to solve the problem.
| A．gradually | B．entirely | C．finally | D．frequently |
Ladies and gentlemen, please fasten your seat belts. The plane________.
| A．takes off | B．is taking off | C．has taken off | D．took off |