When the spaceship leaves the earth at very high speed, the astronauts feel __________ they are being crushed against the spaceship floor.
The little time we have together we’ll try _____ wisely.
Twenty years have passed, I am glad to find the local people in some undeveloped areas are _________ than they were before.
The reason ____ he explained to us was ____he overslept.
— Are you still going to Shanghai for the Spring Festival? — Yes, but I really _____ because I have a lot of things to deal with.
——Mum, I can’t help _____ some housework tonight. There’ll be a football match. —— All right. A doing B done C do D did