Question 22. The air in the city is becoming _______ .

A. seriously pollution B. serious polluted       C. seriously polluted D. serious pollution
 

Question 24. He asked the shop _______  where the English books were. 

A. baker                      B. nurse                      C. assistant         D. conductor

Question 25. We shouldn’t use e-cigarettes, ______________ ?

A. shouldn’t we            B. should we               C. do we               D. shall we

Question 26. That's the man_______ mother tongue is Chinese.

A. A. which                  B. that                         C. who                     D. whose
 

Question 15. She passed the exam easily _______ working very hard.

A. because                  B. because of              C. in spite of                D. so
 

Question 13. I find it very_______ to stay at home all day. 

A. boring                     B. bored                     C. interested        D. B &C are correct