---Have you ever traveled abroad?
---Sure. I____ in a small town in the USA with my grandparents.
| A．used to live | B．was used to living | C．was used to live | D．didn’t use to live |
Guilin is ___ attractive city. It’s ____ nice place that many tourists go there every year.
| A．an; so a | B．a; a so | C．a; a such | D．an; such a |
_______, when Marx was already _______, he found it was important to study the situation in Russia, so he began to learn Russian.
| A．In 1870s, in his fifties |
| B．In 1870s, in fifties |
| C．In the 1870s, in fifties |
| D．In the 1870s, in his fifties |
---Where is Linda? I can’t find her anywhere. ---She ______ the flowers in the garden.
| A．waters | B．is watering |
| C．watered | D．has watered |
If we ______ take environmental problems seriously, the earth _______ worse and worse.
| A．don’t; will be | B．won’t; isn’t |
| C．won’t; is | D．don’t; won’t be |
---How do you like the talk show?
---I think it’s __________, but some people think it’s so _________.
| A．wonderful enough; bored |
| B．enough wonderful; boring |
| C．wonderful enough; boring |
| D．enough wonderful; bored |