Recently we held a discussion about what we shall use for power when all the oil in the world has _________?
| A．run out of | B．used up | C．given out | D．put out |
--- I hear Robert has gone to Harvard University for his master’s degree.
--- Oh, how nice! Do you know when he ____?
| A．was leaving | B．left | C．had left | D．has left |
--- Did your boss phone you again the next day?
--- No, it was a fortnight ____ he gave me a second call.
| A．that | B．when | C．before | D．since |
She made a few mistakes playing the violin, but you should make ____ for her since she’s only been playing for a year.
| A．allowances | B．promises | C．room | D．way |
--- I wonder how long you ____ in Hawaii.
--- Just for the weekend, then I had to attend a conference in Los Angeles.
| A．will stay | B．stayed | C．have stayed | D．were staying |
. I appreciated ____ the opportunity to study abroad two years ago.
having been given B. having given
to have been given D. to be given