A CD was_______ to the front of the magazine to encourage people to buy it.
| A．attached | B．referred | C．led | D．used |
You should pay a lot of attention to children’s ideas; sometimes they ___be really creative.
| A．must | B．can | C．need | D．should |
He is very humorous, while his brother is rather serious. That is ___their difference lies.
| A．why | B．where | C．how | D．when |
I can still recognize Mr. Johnson, who is standing by the door, even though he looks ___different now.
| A．mostly | B．slightly | C．unlikely | D．finally |
It is only ___our power to carry out ( 执行) the rules, rather than make them.
A. within B. on C without D. off
At first his plan seemed impossible to put into practice, but ___it turned out to be quite easy.
A. ever since B. so far C before long D. above all