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。
The Parkers bought a new house, but____will need a lot of work before they can move in.
——Excuse me, I want to have my watch fixed, but I can’t find a repair shop.——I know ____nearby. Come on, I’ll show you.
____people in the world are sending information by E-mail every day.
Really great people always see the best in others; it is the little man who looks for the worst and finds.
No one knows exactly when our ancestors started talking,but new evidence suggests _______might have happened a long time ago.