—Do you know the mission of the volunteers?
—No. But I think _____ they will end up doing there will promote public awareness of environmental protection.
| A．that | B．no matter what | C．whatever | D．whether |
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 |
At this time next week we __________ a football match against Class 9.
| A．are going to play |
| B．will be playing |
| C．will play |
| D．are to play |