Some people feel easy and comfortable to be served by others but when they are asked to serve others ______, they are unwilling or even hate to do so.
| A．in turn | B．in their turns | C．in their turn | D．by their turn |
31. --______ one and a half days enough for the painting to be finished?
--I don’t think it’s enough and only after _________ go on with it.
| A．Is; will he recover he can | B．Are; he recovers can he |
| C．Are; he recovers he can | D．Is; he recovers can he |
30. It was once called the Sea of Bamboo, but now only one fifth of the area ______ covered with bamboo, and sixty percent of other plants ______ taken the place of the bamboo.
| A．are; have | B．is; has | C．is; have | D．are; has |
29. When it rains, you cannot help but _______ your shoes wet.
| A．get | B．to get | C．getting | D．have got |
28. The cloth _______ easily if ______ on a table.
| A．measures; spreading | B．measures; spread |
| C．will be measured; spreaded | D．is measured; spreaded |
27. --Why do you have a _______ look?
--Because you almost _______ me out of life by your _______ mask.
| A．frightening; frightened; frightening | B．frightened; frightening; frightened |
| C．frightening; frightening; frightened | D．frightened; frightened; frightening |