Điền vào chỗ trống

13 the inhabitants wrote a letter of complaint to the local.....about the noise from the factory
A author.     Bauthorities.  C authority. 
 D authorized
14 using........transport is a good way to reduce traffic jams and air pollution
A common.      B private.    C pulic.    D train
15I will be ........ If she manages to sell thật motorbike at high, price
A surprise.    B surprised.   C surprising.   D to surprise
16unless you understand, I .......explain it again to you
A am.     B was.   C will.   D would
17If you know where she lives, please let me.....
A. Know.   B knew.  C known.    D to know
18If hệ........ A student , he will get a discount
A is.      B was.    C we're.    D will be 
19 .......you are interested in this film,don't go to see it at any cost 
A if.    B unless.    C because.    D so
20 if you like that book , I will give it ..... You as my present
A.  For.     B from.    C at.    D to 
21 I won't go unless you ...... Me back the money
A to pay.  B paid.    C paying.   D pay
22 I felt........ Disappointed because of their bad behavior
A real.    B reality.    C really.   D realize
23 You have to listen to your teacher........
A attentive.   B attendance.    C attentively.    
D attend
24 If people drive their cars ....... , They won't get hurt themselves and others
A careful.   B careefully.  C careless. D carelessly
25 if she ..... Enough money , she'll buy her sơn a motor bike  
A earn.     B will earn.      C earns.      D is earning
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