—Another cup of coffee? That’s your third since lunch.
—Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.
| A．stayed up | B．have stayed up | C．have been staying up | D．will stay up |
—I thought you wouldn’t mind.
—Well, as a matter of fact I _____; but you should have asked me first.
| A．did | B．do | C．won’t | D．don’t |
The newcomer is from Tibet, ________ I can tell from his appearance.
| A．which | B．what | C．where | D．who |
The time is not far away______modern communications will become widespread in China’s vast countryside.
| A．as | B．until | C．before | D．when |
The government has taken some measures to solve the shortage of electricity, but it may be some time ___________ the situation improves.
| A．since | B．when | C．unless | D．before |
You will see this product _____wherever you go.
| A．to be advertised | B．advertised | C．advertise | D．advertising |