【题目】You should read the _________ in the car repair manual (手册) carefully before you start to work on it.

【题目】One way to understand thousands of new words is to gain _____ good knowledge of basic word information.

【题目】The little boy sat _____ to his father, and listened ____ with great interest

【题目】Mike ____ with Janet for over one year before they got married.

【题目】Our capital, Beijing, ______ on improving the city’s environment in the past three years through various measures.

【题目】Jack is a great talker. It’ high time that he ________ something instead of just talking .

【题目】 It is believed that ____ part of the animals cannot stay alive in water at 1,500 meters below ___ sea level.

【题目】_____ to nuclear radiation, even for a short time, may produce variants (变异体) of genes in human bodies.

【题目】The first time I ____ Todd, he ____ to some students at the English corner.

【题目】It remains a puzzle for scientists ______ pleasant smells do not reduce pain in men.