If we________a table earlier, we couldn't be standing here in a queue.
| A．have booked | B．booked |
| C．book | D．had booked |
You'd better not phone me between two and six o'clock this afternoon; I __________ a speech then.
| A．will give |
| B．will have been giving |
| C．will be giving |
| D．will have given |
By the middle of the 21st century, the vast majority of the world's population __________ in cities rather than in the country.
| A．are living |
| B．will be living |
| C．have lived |
| D．will have lived |
-I will call on you at 9:00 tomorrow morning.
-Sorry, I __________ the flight to Sanya then.
| A．have enjoyed |
| B．will be enjoying |
| C．am enjoying |
| D．am to enjoy |
My wife __________ the night shift when my plane __________. That's why no one is to meet me at the airport today.
| A．will be working; arrives |
| B．was working; arrived |
| C．will have worked; has arrived |
| D．is working; is arriving |
By the time you arrive in New York tomorrow, I __________ in the USA for 3 days.
| A．shall stay |
| B．will be staying |
| C．will have stayed |
| D．had stayed |