5.—Dogs need fresh air and large open spaces where they can.

  — ,they are usually kept in small spaces and don't have many chances to do   that.

A.lie around;So 

B.run free;However 

C.lie around;However 

D.run free;So

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2. A. another   B. the others   C. others   D. the other

3. A. who   B. which   C. how   D. where

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6. A. them   B. their   C. it   D. itself

7. A. but   B. so   C. and   D. or

8. A. fastly   B. fast   C. faster   D. fastest

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