II. Choose the item (A, B, C or D) that best fills the blank spaces: (10pts)

How can we ..........( 36 ) .......our teeth healthy? First, we ought to ...............( 37 ) ....our dentist twice a year. He can fill the small ...............( 38 ) in our teeth before they destroy the teeth. Secondly, we should brush our teeth ............( 39 ) ....twice a day – once after breakfast, and once before we go to bed. We can also use .............( 40 ) ......toothpicks to clean ................( 41 ) ...our teeth after a meal. Thirdly, we should eat food ...........( 42 )........... good for our teeth and our body: milk, fish, potatoes, raw vegetables and fresh fruit. Chocolate, sweets, biscuits are bad .............( 43 ) ....when we eat them between meals. They are ...........( 44 ) .......because they stick to our teeth and ............( 45 ) decay.

36.   

A. keep

B. do

C. clean

D. brush

37.   

A. meet

B. visit

C. look

D. find

38.   

A. caves

B. meals

C. holes

D. things

39.   

A. at least

B. at less

C. at work

D. at much

40.   

A. paper

B. leather

C. metal

D. wooden

41.   

A. on

B. among

C. between

D. at

42.   

A. it is

B. that is

C. this is

D. they are

43.   

A. because

B. too

C. enough

D. especially

44.   

A. harmful

B. healthy

C. good

D. useful

45.   

A. fill

B. cause

C. do

D. make