2 . The president _________(简短地) introduced the economic and social development of the country.

3 . 他向我们简要说明了一下发生的事情。
He told us ________ what had happened.

4 . In this section, we will____________(简要地)describe possible ways of reducing the costs.

5 . Above all, I’d like to introduce the design of the studio __________(简要地).

6 . He was told to speak _______（brief）, so he cut short his speech. （所给词的适当形式填空）

7 . His success was a long story, but ______ , he succeeded after many failures.

A．blindly

B．barely

C．broadly

D．briefly

8 . If you _____ regret things you did or didn’t do in the past, then you won’t be able to move forward.

A．actually

B．briefly

C．casually

D．constantly