Question

【题目】It's 3:30 p. m. Kangkang and his classmates are busy _____ basketball on the playground.
A.playing
B.to play
C.play
D.played

Answer 1

【答案】A
【解析】句意：现在时下午3点半，康康和他的同学们在操场上忙着打篮球。be busy doing sth.“忙于做某事”，故选A。