用所给词的适当形式填空

First we thought about _____ (put) some rocks on the truck.

用括号内所给词的适当形式填空．

At the end of tile discussion, they reached an ____________ (agree).

用括号内所给词的适当形式填空．

In the ___________ (twenty) century, women's umbrellas began to be made, in different colors.

用括号内所给词的适当形式填空．

He likes ___________ (scientist) better than music.

用括号内所给词的适当形式填空．

What __________ (invent) is the most important in the past twenty years?