_________trees have been planted near, so the air is very fresh.
A. Hundreds of B. Hundred of C. Two hundreds D. Hundreds
The TV play ___________for ten minutes when I turned on the TV.
A. had started B. had begun C. has been on D. had been on
The new library building ___________last week.
A. completed B. was completed C. is completed D. has completed
The math problem was _________ difficult __________ none of us worked it out.
A. very; that B. too; to C. so; that D. enough; that
The CD is too noisy. Would you please__________ a little?
A. turn it on B. trun down it C. turn it up D. turn it down
______Lily ______Lucy may go to the concert because they have got only one ticket.
A. Either; or B. Neither; nor C. Not only; but also D.Both; and