1. I can’t hear your voice __________ I’m wearing an earplug.

     A. although           B. due                         C. however                D. because

2. It was guessed that the fish died__________ a powerful toxin in the sea water.

   A. because of         B. because                 C. since                      D. as a result

3. Radioactive pollution is increasing      _______ the increased use of radioactivity.

      A. as                     B. since                      C. because of             D. because

4. Oil slicks from boats or ships pollute the sea; __________ , many fish and sea-birds die.

     A. because                    B. so                    C. however              D. therefore

5. Scientists has just come up __________ a solution to hearing loss.

     A. to                       B. on                           C. with                        D. down

6. Pollutions are harmful __________ human health.

     A. with                   B. at                            C. to                            D. on

7. The fire was raging so fiercely that the rescue workers found it hard to put it __________.

     A. down                 B. out              C. off                          D. with

8. Using computers too much may have harmful effects _____ your minds and bodies.

      A. at                      B. on                           C. in                            D. with

9. It can’t be denied that English has become an __________ language of the world.

     A. national                        B. international         C. cultural                  D. multicultural

10. Trung speaks English like a native __________ though he comes from Vietnam.

     A. speak                B. speaking                C. speaker                  D. spoke

Which

when

where

why

where

when

why

where

when

when

which

who

who

C

B

A

D

C

carelessly

begining

well

to brush

noisier

Vui cho phí hơn sức vô ích lm j pé, r nhận cái kết là..

K đou pé, páo cáo