6. ---“Do you have to leave?” ---“Sorry, but I really ___D_____.”

A) have

B) had to

C) do so

D) must

7. ___B_____ the heavy snow last night, none of the classes have been   cancelled at the university.

A) Despite of

B) In spite of

C) In spite

D) Despite with

8. ---“Listen, Mary is singing in the next room.” ---“That ___D_____ be Mary.   She’s in hospital.”

A) may not

B) shouldn’t

C) should have gone

D) can’t

9. He sold his car ___A_____ $ 2,000.

A) for

B) over

C) in

D) by

10. Mr. Brown often wears a heavy coat because he is not used _____B___ in   such a cold climate.

A) to live

B) to living

C) live

D) lived