16. ________ dog is ________ useful animal and ________ honest friend as well.
A. A. a; an B. A; an; a C. The; an; a D. The; an; an
17. Barack Hussein Obama, the present president of the USA,_____ a naughty (调皮的)boy at school.
A. used to be B. used to being C. is used to be D. is used to being
18. The new book________by the famous writer________very well.
A. was written, is sold B. written, sells
C. written, is sold D. was written, sells
19. What_____ news! Our school will go to Beijing for a _____visit this summer.
A. excited, seven days’ B. an exciting, seven-day
C. exciting, seven-day D. excited, seven days
20. ---Oh, so many people are standing outside the hall. ___________will the meeting begin?
--- _________eight o’clock.
A. How soon, Not until B. How lo
