The aircraft vanished without（）

The weakening housing market continued to take its（）on the industry.

She is very nice, but because she has a（）way of speaking, she is slow in making friends

Inquiries（）the condition of the patients may be made personally or by telephone.

He（）for military service against the wishes of his parents.

She had clearly no（）of doing any work, although she was very well paid.

An explosion is a sudden increase in amount（）

Many students found the book （）;it provided them with a large amount of information on the subject.

Some say yes and others say no; I don't know （）to follow.

He will behave(crazy)（）if he drinks too much.