The farmer lives on growing vegetables. He can’t earn______ this year because of the drought (旱灾).

Look, John’s fallen asleep at work!— Oh, he must have ________ late last night.[ ]

Many species are in ______ danger of extinction now due to the foolish actions of ______ human race.

These changes may cost quite a lot, _____ they will save us money in the long run

There is a teacher’s desk ______ of the classroom. Mr. Liu is standing ______ of it.