The scientists are beating their brains trying to _______ a solution to the problem.
| A．come about | B．come across | C．come out | D．come up with |
Have you ever seen the film Titanic, ________ leading actor is my favourite?
| A．its | B．that |
| C．whose | D．which |
The father seldom had time to share with his children, because he devoted most of his time _______ research in his lab.
| A．to do | B．to doing |
| C．doing | D．done |
I still remember the day_______ I was admitted(录取) to the key middle school.
| A．that | B．when |
| C．which | D．on that |
I __________live in the countryside, but now I ________ living in the city.
| A．am used to; am used to | B．am used to; used to |
| C．used to; used to | D．used to; am used to |
I have seen the film twice. ________ my elder sister.
| A．So has | B．So have |
| C．So is | D．So does |