(29)_____
A.Moreover 
B.Thus
C.But  
D.However

- Why do we need clean air?
- Well, it  ................ us with a lot of oxygen.
A.protects
B.provides
C.preserves
D.produces

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
Once ______ as the World Natural Heritage by UNESCO, Phong Nha – Ke Bang National Park attracts a great number of visitors worldwide.
A.having recognized 
B.recognized
C.recognizing                                                                     
D.is recognized

A.boxes
B.washes
C.watches
D.goes

- “You really have a beautiful blouse, Mary. I have never seen such a perfect thing on you”
- “                                  ”
A.Good idea. Thanks for the news.      
B.Thanks, Tom. That’s a nice compliment
C. Well, that’s very surprising!             
D.Yes, it’s our pleasure.

_______(77)
A.in
B.by
C.to
D.from

He is the man ..............helped me yesterday
A.which
B.who    
C.whom
D.whose

Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions.

A.chemistry       
B.decision                              
C.statistics                             
D.attention

There is no point asking Bob for information concerning the contest. As far as I know he___________about it
A.hasn’t beentold                      
B.didn’t tell                     
C.hasn’t told                        
D.wouldn’t tell

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Universities send letters of __________ to successful candidates by post.
A.accept 
B.acceptable
C.acceptably
D.acceptance