For that artisan, making the paintings is a career _____ it supports the life of many generations of the family

5.  For that artisan, making the paintings is a career                    it supports the life of many generations of the family.

A. because of                  B. although                      C. so that             D. because

6. This laptop is much more user – friendly, it costs ______ the other one.

 A. so much as          B. as many as                        C. twice as much as             D. less than

7. Peter has to study this afternoon, _______?

A. has he                   B. does he                             C. doesn’t he             D. hasn’t he

8. Her grandfather is very                about geography.

A. knowledge            B. knowledgeable                C. knowing                D. know
11. If every one of US ______ the traffic rules, the road would be much safer. 
A. obey                  B. obeyed                  C. obeys              D. will obey