He didn’t selfishly keep for himself the money inherited from his uncle. Instead, he made a ______ contribution to help the community.
If we had taken such effective measures much earlier, the river ________ so seriously now.
George is going to talk about the geography of his country, but I'd rather he ________ more on its culture.
Don't handle the vase as if it ________ made of steel.
Jack is a great talker. It's high time that he ________ something instead of just talking.
—Where are the children? The dinner's going to be completely ruined.—I wish they______always late.