It’s very hard ___________the swimming pool.
| A．to swim across | B．to swim cross | C．swim across | D．swim cross |
I want to visit a place is famous for its scenery.
| A．which | B．where | C．when | D．who |
The Greens many places of interest since two years ago.
| A．has visited | B．have visited |
| C．visited | D．will visit |
Most people enjoy other people games.
| A．watching; plays | B．to watch; to play |
| C．watching; playing | D．watching; to play |
There will not be enough space to the earth in the future.
| A．live on | B．live in |
| C．live on in | D．live in on |
—Mum, I don't know if Honghong to my party tomorrow.
—I think she will come if she free.
| A．comes, is | B．comes, will be |
| C．will come, is | D．will come, will be |