Listening to loud music at rock 
concerts ______ hearing loss in some teenagers.
| A．have caused | B．has been caused | C．is caused | D．has caused |
Holiday is ______ time for leisure. But making good use of ______ time is not an easy task for most people.
| A．the; the | B．a; the | C．the; a | D．不填; 不填 |
The Sydney Opera house , which ________ almost 900 rooms and halls of different sizes, is our first stop in Australia.
A makes up B. consists of C. connects with D. combines with
I have no idea____________ the book is __________ to your English study.
| A．whether, of great value | B．if , of great value |
| C．that , so value | D．how , very valuable |
Use your head; nothing taught by others can have the same effect on you as _________learned by yourself.
| A．those | B．what | C．that | D．the one |
The church ,___________the 14th century , is still well preserved.
| A．dates back to | B．dating back to |
| C．that dates back to | D．which dated back to |