---It’s difficult for the villagers to cross the river.
---I think a bridge______ over the river.
| A．should be built | B．is being built | C．has been built | D．was built |
I _____rockets to the moon when I grow up.
| A．will put | B．be flying | C．will be fly | D．will fly |
Will there be _______ people in China in ten years? No, there won’t.
| A．fewer | B．much | C．less | D．many |
—Do you like the city life or the country life?
—It's hard to say. In the city there is _____interesting, but in the country there is _____ pollution.
| A．less; more | B．more; less | C．more; fewer | D．much; much |
____ people ____ robots in their home in 100 years ?
| A．Will ; have | B．Do;, have | C．Did ; have | D．Have; have |
He is happy that he _____in a tall apartment next year.
| A．live | B．lives | C．will live | D．will living |