Only then did he theeffects of his action.

possible means _____ to prevent the airpollution, but the sky is still not clear.

Last Monday, I was asked to give the new students a test ______ their English level.[ ]

Since nobody is here, the meeting will be delayed until tomorrow. The underlined word means ___.

__, but the noise is reallydisturbing I can’t sleep— I’m sorry I didn’t know you wouldmind