New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.
| A．is used; not to pollute | B．has used; is not polluted |
| C．is being used; do not pollute | D．has been used; to pollute |
-- My parents are preparing my favorite dishes. Go with me and have a taste, okay?
-- ______. And I’ll be glad to meet your parents.
| A．I think so | B．I hope so | C．I’m sure | D．I’d love to |
Don’t blame the worker. He just carried out the order______.
| A．as told | B．as are told | C．as telling | D．as they told |
----- Where will I put the MP4?
----- Put it ______ we can all see it.
| A．when | B．since | C．where | D．unless |
_______ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
| A．Which | B．What | C．It | D．That |
I like _____ when I am with people like Mr. Smith, who has a good sense of humor.
| A．this | B．it | C．one | D．that |