问题
With his attention________on the shopsalong the roadside，heknocked an old man down while riding to school.
A:close
B:concentrated
C:to concentrate
D:concentrates答案 B解析 考查词组，故选B项。
B:concentrated
C:to concentrate
D:concentrates答案 B解析 考查词组，故选B项。
正确答案是：
同类题型
You have no chance of getting the position. I’m afraidyou _____ your time if you apply for it.
Kate likes English, but Frank .
This is_______ ID card. I found _______ ID card on the desk.
You can’t imagine ____ when they received these nice Christmas presents.
It is nice to do something for someone else out of the blue and not to expect anything ______