【题目】Shirley ________ a book about China last year but I don’t know whether she has finished it.

【题目】The lawyer seldom wears anything other than a suit ________ the season.

【题目】When Peter speaks in public, he always has trouble _ the right things to say.

【题目】While ___ along the street, I met an old friend of mine.

【题目】Mother always complains that children _______ their shoes very quickly.

【题目】1 think we'd better keep to the subject, ______we'll waste our time．

【题目】Catherine is color-blind and can’t ______ red from green as easily as other children.

【题目】— You’ve taken the lead in the test again. Can you share your ______ for success with us?

【题目】The advanced entire production process is paperless and much faster than that of ______ factories.

【题目】To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.