一、单项选择(共15小题；每小题1分，满分15分)
从下列各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
( )16.—I missed the beginning of _________cartoon The Lion King.
—What a pity! You should have left school half ___________hour earlier.
A.. a ；an B. the ；a C. the ；an D. an ；the
( )17.— How far is your home from school? —It’s about two__________ walk.
A. hours B. hours’ C. hour’s D. hour
( )18. —When did the terrible earthquake happen in Ya’an Sichuan?
—It happened__________8:02_________the morning of April 20th ,2013.
A. on；in B. at；on C. at；in D. on；on
