The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
| A．found out | B．pointed out | C．ruled out | D．carried out |
Do you consider _____ any good doing many scientific experiments?
| A．there | B．this | C．it | D．one |
When he failed to beat John, he felt he had _____ his friends.
| A．lost face | B．lost face with | C．saved face | D．pulled a face |
— Was Andrew there when you arrived?
.— .Yes, but he _____ home soon afterwards.
| A．had gone | B．has gone | C．is going | D．went |
I really don’t understand _____ her like that.
| A．you treat | B．you to treat | C．why treat | D．you treating |
— What was she doing when you visited her?
.— She was _____ herself in the mirror.
| A．admiring | B．seeing | C．enjoying | D．devoting |