Paper bags produced every year are ______ the world’s production of vehicles.
| A．as three times heavy as | B．three times weight of |
| C．three times the weight of | D．three times as heavier as |
The vegetables didn’t taste very good. They ______ too long.
| A．had been cooked | B．were cooked |
| C．have cooked | D．cooked |
I used to drink a lot of tea but these days I ______ coffee.
| A．prefer | B．preferred |
| C．had preferred | D．am preferring |
--- What do you think of this kind of TV set, which ______ in Shanghai?
--- Well, I don’t care about such things.
| A．was made | B．is made |
| C．has been made | D．had been made |
Don’t bother to look for my dictionary--- it ______ some day.
| A．turns up | B．has turned up |
| C．will turn up | D．is going to turn up |
I know Mr. Brown; we ______ to each other at an international conference.
| A．are introduced | B．are been introduced |
| C．were introduced | D．had been introduced |