我国国旗的颜色有:________A.red and white B.red and yellow
We don’t have any class ______ Saturday. A. to B. at C. on
I go to school_________ 7 o’clock. A. on B. at C. in
Who’s ________ the bathroom? A. on B. atC. in
How_______ your day? It was OK. A. is B. was C. are
It _________ about 20 minutes. A. take B. takes C. taking