1.    a, started/id/

b, requested/id   

 c, demanded/id/     

d, worked/t/

2.    a, leaded/id/     

b, finished/t/         

c, watched/t/       

 d, launched/t/

3.    a, enjoyed/d/      

b, faxed/t/              

c, happened/d/         

d, joined/d/

4.    a, corrected/id/      

 b. naked/t/                 

c. interested/id/            

d. asked/t/

5.    a, shared/d/           

b,reserved/d/              

 c, borrowed/d/            

d, attracted/id/

6.    a, informed/d/
b, entertained/d/
c, stopped/t/
d, installed/d/

7.    a, improved/d/
b, changed/d/ 
c, stayed/d/
d, produced/d/

8.   a, phoned/d/
b, invested/id/
c, participated/id/
d, corrected/id/

9.   
a, waked/t/
b, taked/t/
c, naked/t/

d, walked/t/

10. 

a, frightened/d/
b, travelled/d/
c, studied/d/
d, prepared/d/

Ex 2:

1.How far is it from Hanoi to New York city?
2.Ken used to play marbles when he was a kid
3.Hien Anh and Huy Anh will go to school by bus
4.Co will reduce energy consumption 
5.My parents will go to work by train
6.We will be studying English at 9 o'clock afternoon tomorrow
7.Manh used to play the guitar when he was a kid
8.Heo used to play video games when she was a girl

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