How long ______ teaching? Forty years.
| A．he will have been | B．will have he been |
| C．will have been he | D．will he have been |
She had wanted to go to the west part of China in search of better view. But she turned voluntary teacher there.
| A．a; / | B．the; / | C．the; a | D．a; the |
All passengers _______, please fasten your seat belts and remain seated _______ the plane is landing.
| A．on board; until | B．abroad; since | C．on the board; before | D．aboard; when |
________ I can see, there is only one possible way to keep away from the danger.
| A．As far as | B．as long as | C．Just as | D．Even if |
Don’t give up halfway, Andy. You’ll succeed _______ if you keep on working like this.
| A．in turn | B．on time | C．in time | D．by accident |
He made up his mind to devote his life _______ pollution _______ happily.
| A．to prevent; to live | B．to prevent; from living |
| C．to preventing; to live | D．to preventing; living |