Rock-climbing is a breathtaking activity, very popular nationwide among young people, ______ cooperation as well as courage plays an important role.
| A．who | B．where | C．which | D．of which |
Generally speaking, clothes made of man-made materials is less comfortable than _____ made of natural fibers like cotton, wool or silk.
| A．that | B．it | C．those | D．One |
The old buildings, _____ the seventeenth century, were destroyed in the earthquake.
| A．date from | B．dating from | C．dated from | D．to date from |
---- Tim was seriously hurt in the match and sent to hospital.
---- _____, let’s go and see him.
| A．If so | B．If not | C．If necessary | D．If any |
Sandy could do nothing but _____ to his teacher that he was wrong.
| A．admit | B．admitted | C．admitting | D．to admit |
_____ in Paris, the Louvre is one of the world’s largest art galleries.
| A．Locating | B．Located |
| C．Having been located | D．Being located |