11. This weekend we'll write_______800-word article.
A. a B£®an C£®the D. /
12. Oh, it's you, Jim! Your voice sounds very different _______the phone. What's happening?
A. from B£®in C£®of D. on
13. Today is my mother's_______ birthday.1 will buy her a gift.
A. fourteen B. fourteenth C. forty D. fortieth
14._______tall the boy is! He can play basketball very well!
A. How B. How a C. What D. What a
15. -Could I smoke here?
-Sorry, I'm afraid you_______.