—Obviously, the boss looks happy again, doesn’t he?
—Yes. It’s said that he has ______ the difficult problem.
| A．succeeded in solve | B．tried to solve |
| C．managed to solve | D．been solved |
—Jack, you erase the blackboard today,______?
—But I erased it yesterday.
| A．have you | B．will you | C．didn’t you | D．don’t you |
The police finally found the robber ______near a river_______
| A．lying; dead | B．lay; died | C．laid; death | D．lain; dying |
You can’t shut your eyes to the fact _______he did was right.
| A．that | B．what | C．which | D．that what |
I must thank my parents ___________ to be a college student.
| A．to make it possible for me | B．to make it possible to me |
C．f or making it possible for me |
D．for making it possible to me |
They set off________a trip________London.
| A．on; for | B．on; to | C．for; to | D．for; for |