Barack Obama has taken personal blame ________ the security failures which led ________ the attempt to blow up a plane on Christmas Day.
| A．of; to | B．for; to | C．on; on | D．in; on |
After graduation I’d like to find a job _______ I can use what I have learnt at school.
| A．whose | B．which | C．where | D．that |
The report said that the increase in oil prices hasmany changes in our lives.
| A．came across | B．answered for | C．given out | D．brought about |
— I telephoned him twice and I couldn’t get through to him.
—The line might have been out of order, _______?
| A．don’t you | B．wasn’t it | C．do you | D．hadn’t it |
Miss Li _______ as a secretary for five years in the company, and now she is general manager of it.
| A．has served | B．had served | C．served | D．serves |
I heard the clock eight when I woke up.
| A．beating | B．striking | C．hitting | D．knocking |