In developed countries, farm workers _________ only a small section of the population.
| A．pick up | B．make up | C．hold up | D．keep up |
-- Sorry, it's already 6 o’clock. I have to be off for an appointment.
--- OK. ________.
| A．It couldn’t be better | B．You really have me there |
| C．Let’s call it a day | D．Take your time |
--Why do you choose to work in an international travel agency?
---Well, you know, English is my ________. So it is my best choice.
| A．strength | B．talent | C．ability | D．skill |
As time went by, the plan stuck ________ fairly practical.
| A．to prove | B．to proved | C．to proving | D．to proves |
Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.
| A．is leaving; takes off | B．will leave; is taking off |
| C．leaves; will take off | D．is to leave; is going to take off |
Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.
| A．that | B．where | C．which | D．whose |