( )16. Look at ________ blue sky. What ________ nice day!
A. a, / B. the, / C. the, a D. a, a
( )17. John is 18 years old and he is old enough to take care of __________.
( )18. —What does Jim think of learning English?
—Jim thinks that ____ English movies isn’t a good way.
A. looking B. writing C. watching D reading
( )19. The rest of the food _________ not enough for two days.
A. am B. is C. are D. be
