With his attention________on the shops along the roadside，he knocked an old man down while riding to school.

A  concentrating     B．concentrated     C．to concentrate      D．concentrates

答案　B

解析　考查词组，故选B项。

完成B句，使其与A句意思相同或相近（每空一词）

A. As soon as he arrived, my uncle hugged Pompy and tried to give him courage.

B. 　　     　　   my uncle hugged Pompy and tried to give him courage.

A. By staying calm we will be able to think about what to do and make better decisions.

B. 　　   by staying calm　　     　　   be able to think about what to do and make better decisions.

完成B句，使其与A句意思相同或相近。（每空一词）

A. We can hope to reach our goals and truly make a difference by discovering what we do best.

B.　　    by discovering what we do best 　　    　　     hope to reach our goals and truly make a difference

A. Many of great achievements are likely to be born in northeastern Beijing.

B.　　   　　   　　   that many of great achievements will be born in northeastern Beijing.