The global warming is more and more serious，for which human beings ________.
| A．are blaming | B．are to blame |
| C．are going to blame | D．are to be blamed |
--- Bill, can I get you anything to drink?
--- .
| A．You are welcome | B．No problem |
| C．I wouldn't mind a coffee | D．Doesn’t matter |
He did not regret saying what he did but felt that he ______ it differently.
| A．could express | B．would express |
| C．could have expressed | D．must have expressed |
Compared with his sister, Jerry is even more ____to, and more easily troubled by , emotional and relationship problems.
| A．sceptical | B．addicted | C．available | D．sensitive |
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers, almost three times the number hired last year, ____ reduce unemployment pressures.
| A．help | B．to have helped | C．to help | D．having helped |
--- Hi, Terry, can I use your computer for a while this afternoon?
--- Sorry. .
| A．It' s repaired | B．It has been repaired |
| C．It's being repaired | D．It had been repaired |