---Tom, don’t drop litter on the ground, please. --- .
His name is Alan Smith . His family name is . A.Alan B. Alan Smith C. Smith
书写时占三格的字母是 A. f B. i C. g
This is map and that is orange . A. a; a B. a ; an C. an ; an
—What does your father look like? —
We must the right place to park the car.