He was surprised ________ his best friend again.
| A．to see | B．seeing | C．see | D．sees |
—Be careful ! There is _____dog lying on the ground.
—Thanks a lot.
| A．a | B．an | C．the | D．/ |
— Do you know sound travels very fast?
— Yes. But light travels sound.
| A．as fast as | B．a little faster than |
| C．much faster than | D．slower than |
— When shall we leave for China?
— We won’t we have visited all the places of interest here.
| A．until | B．while | C．as | D．since |
— I don’t think we can find a new day to work out the problem.
— But we’d better not .
| A．end up. | B．hand out | C．give up | D．put out |
— How will the boss be back?
— In these days.
| A．far | B．soon | C．long | D．often |