A.bus | B.bike | C.subway | D.train |
A.north | B.south | C.east | D.west |
A.morning | B.afternoon | C.evening | D.tonight |
A.actor | B.artist | C.singer | D.cleaner |
A.vapour | B.rain | C.cloud | D.stream |
A.five | B.the five | C.fifth | D.the fifth |
A.in | B.at | C.on |
A.the | B.an | C.a |
A.two | B.three | C.four |
A.do…do | B.does…do | C.is…doing |
A.at;at | B.on;on | C.at;on |