Although it seemed to be ______ uncomfortable experience, he still found it ______ fun to learn diving.
| A．an; / | B．/; a | C．a; the | D．an; a |
—It's difficult to get to the other side of the river.
—I think a bridge ________ over the river.
| A．should be built | B．should build |
| C．will build | D．has built |
Flowers_____ along the road last year.
| A．plant | B．planted |
| C．are planted | D．were planted |
Pens are used for on paper.
| A．write | B．writing | C．to write | D．Wrote |
— Do you know in ancient China?
— I have no idea. But I know people once used tree leaves to make paper.
| A．how paper was made | B．how was paper made |
| C．what paper was made | D．what was paper made |
— Michael Jackson was called the king of pop, wasn’t he?
— Of course. He by people all over the world.
| A．was looked up | B．was looked up to |
| C．looked up | D．looked up to |