Due to the ______ of this medical technology, some diseases can be treated at an early stage.
| A．approach | B．appreciation |
| C．application | D．appointment |
— What do you think of this kind of TV set, which ＿＿ in Shanghai?
— Well, I don’t care such things.
| A．was made | B．is made | C．has been made | D．had been made |
I didn’t like Aunt Lucy, who＿＿without warning and bringing us presents.
| A．always turned up | B．has always turned up |
| C．was always turning up | D．was always turned up |
— I＿＿to a party, but I’ve got nothing to wear.
— Why don’t you have a dress made for the party?
| A．was asked | B．will ask | C．have asked | D．have been asked |
—Where do you think＿＿he＿＿the computer?
— Sorry. I have no idea.
| A．has ； bought | B．／； bought | C．did ； buy | D．had ； bought |
I know Mr. Brown；we ＿＿ to each other at an international conference.
| A．are introduced | B．have been introduced |
| C．were introduced | D．had been introduced |