Very little use was _____ the waste waterin the past．

Will it be____this afternoon,John?-It depends, I’m afraid I’ll be called in by my manager.[ ]

We don’t have enough money to________until next month. [ ]

students’ eyes, Mrs Smith is a mothermore than a teacher. shetreats the students just like her own children.

When I went into her room, she was _____ in her book. [ ]