My teacher_______ writing with his left hand whenever he stands on the right of the board.
A.used
B.is using
C.used to
D.is used to

____________, it is the best way that you shouldn’t worsen it.
A.Despite of your solving the problem
B.Unless you can solve the problem
C.Although be able to solve the problem
D.If you weren’t able to solve the problem

The more you study, ______________.
A.you are the more knowledgeable
B.the more knowledge do you gain
C.the more knowledge you gain
D.you will gain more knowledge

Studying English well______________ for most graduated students.
A.is becoming more and more convenient
B.has become as convenient
C.will become more convenience
D.becomes the most conveniently

My mother is ill so I’d like to have a day off to take care for her.
A.so
B.to have
C.day off
D.take care for

Today the Internet is a very fast and convenient way for people to get lots of informations
A.fast
B.convinent
C.to get
D.of information

The United Nations _______ in 1945 after World War II to replace the League of Nations, to stop wars between countries.
A.was founded
B.founded
C.had been founded
D.found

Nam: “Do you find it very satisfying to buy the car without my advice?” --Mai: “_____________________”
A.No, not at all.
B.Never mind.
C.What a pity!
D.Yes, you’re welcome.

Despite its open_______ mechanism, the foreign investors are still risk-averse. (investing conservatively)
A.economical
B.economics
C.economizing
D.economic

We are talking about the new writer Nguyen Ngoc Tu, _______latest book Canh Dong Bat Tan is becoming one of the best-sellers this year.
A.who
B.whose
C.which
D.whom