In America, people give flowers ______ birthday presents.

It is said that Mr. White will ________ Mr.Green in this school.

ng Bee is a contest competitors,usually children, are asked to spell as many words as possible.

Do you know the timetable of the school bus? —Sure, the first trip________ at 6:30 a.mand usually continues until 4 p.mon weekdays

What made me surprise was his attitude________the mistakes I had made.[ ]