–Do you think travelling is good ____us?
--Yes, I think so. It’s good to relax ______visiting interesting places.
| A．to; on | B．to; in |
| C．for; by | D．for; of |
Do you play ____ violin in your free time ?
No, I like doing sports. I often play ____ table tennis with my classmates.
A. /…the B. the…/ C. the…the
The first thing _____ I should do is to work out a study plan for the next term.
| A．which | B．that | C．what | D．if |
_____ of the water _____ polluted. We must try to protect our environment.
| A．Two third; are | B．Two third; is | C．Two thirds; are | D．Two thirds; is |
He is so poor that he has no house _____.
| A．to live | B．living | C．living in | D．to live in |
The stones are so heavy. How _____ they _____ to the top of the building without modern machines?
| A．do; lift | B．did; lift | C．were; lifted | D．were; lift |