The research team can handle ____ needs to be handled.

She has taken great pains to conceal her emotions, and thereby made them ______ conspicuous.

______you were busy, I wouldn＇t have bothered you with my questions.

Only take such clothes ______ really necessary.

______ human problems that repeat themselves in ______ life repeat themselves in ______ literature.

"She must be in the dormitory now." "No, she ______ be there. I saw her in the classroom a minute ago."

It was recommended that passengers ______ smoke during the flight.

The country＇s chief exports are coal, cars and cotton goods, cars ______ the most important of these.

So badly ______ in the car accident that he had to stay in hospital for a few months.

______ regular training in nursing, she could hardly cope with the work at first.

We can assign the task to ______ is capable and trustworthy.