Nowadays, China has been the Top 1 exporting country in the world.

1 Betty has been on a diet (节食减肥) for a long time, but she looks a bit heavier,

How much of our memories have been changed or forgotten? [音频] A: 1/2. B: 2/3. C: 1/4. D: 1/3.

1、I don’t think it advisable that Tom ____ to the job since he has no experience.A .is assignedB. will be assignedC. be assignedD. has been assigned A: .is assigned B: will be assigned C: be assigned D: has been assigned

I _______ to the museum. A: am been B: been C: have been

The statement "Many of the options are already been rehearsed in the press' ( Line 2, Para. 1) suggests that______. A: there has been much discussion about the alternative solutions to the funding problem in the newspapers B: there have already been practice performances in the theatre of the funding problem C: many of the alternative solutions have been carried out to cope with the funding problem D: many of the alternative solutions have been turned down owing to the pressure from the mass media

70（） A: been turned down B: been turned away C: been tamed up D: been turned out

-Where is your father?-He ________ Australia and he ________ Sydney for two weeks. A: has been to;has been in B: has gone to;has been in C: has been in;has been to D: has gone to;has been to

1 I'm tired. I___________for ten hours. A: 've been working B: 've worked C: work

It’s a shame _________ able to give them any advice. A: not to have been B: to have not been C: to have been not D: to not have been