Nothing is so easy as ________ parents to raise their expectations of their children too high. (2012·福建，33)
| A．of | B．to |
| C．by | D．for |
Father was late for workthe traffic jam, and,the boss blamed him for it.
| A．as a result;as a result of | B．as a result of; as a result |
| C．as a result of;in other words | D．as a result; in other words |
Youto ask the teacher if you want to hace a day off.
| A．are supposed | B．suppose | C．are allowed | D．allow |
His explanation was so confusing that I could hardly make anyof it at all.
| A．meaning | B．sense | C．idea | D．significance |
There is a big library in our city. There are more than twiceten years ago.
| A．books than | B．many books than | C．as many books as | D．as books as |
Humans go againstnature soenvironment is getting worse and worse.
| A．the ; an | B．/;an | C．the;the | D．/;the |