（）(信不信由你), his discovery has created a stir in scientific circles.

Some women （）(本來能夠掙一份很好的工資) in a job instead of staying home, but they decided not to work for the sale of the family.

The room is in a terrible mess; it （）（肯定沒打掃過）.

If this can’t be settled reasonably, it may be necessary to（）(訴助武力).

If you won’t agree to our plan,（）(他們也不會同意).

It’s time（）(采取措施) about the traffic problem downtown.

Most doctors recognize that medicine is as much（）(是一門科學，也是一門藝術).

How close parents are to their children（）(有很強的影響) the character of the children.

There’s a man at the reception desk who seems very angry and I think he means（）(想找麻煩).

I have had great deal of trouble（）.(跟得上班上的其他同學)