When ________ to the market, these products were very popular.
| A．introducing | B．introduced |
| C．introduce | D．being introduced |
Cold tea _________ an excellent drink when it is very hot in summer．
| A．makes | B．pro duces |
C．serves | D．turns |
I have the same opinion as yours _____ we should carry out the experiment at once.
| A．that | B．which | C．whether | D．where |
– We’ll spend the vacation in Hawaii. Don’t you think it is a wonderful idea?
-- ___ I have waited for it for a whole year. Now my dream has come true.
| A．I don’t think so | B．No, it isn’t. | C．How wonderful! | D．Just so-so |
Nowhere else in our world ________ such a quiet, beautiful place ________ Angkor Wat.
| A．there can be; in | B．is there; that | C．there is; as | D．can there be; as |
– What a hard chair! --Yes, it is. But in fact, it is very comfortable to _____.
| A．sit | B．sit on | C．be sat | D．be sat on |