— __________ try some fish? It looks delicious.
— It smells __________. I don't want to eat it.
小明准备为希望工程捐款,他现在有40元,以后每月打算存20元,若设x月后他能捐出200元,则下列方程中正确的是( )
一个完全平方式为a2+■+9b2,但有一项不慎被污染了,这一项应是____ .