核心词汇运用 — 英语选择题

看情境，选出能依次填入三处的本单元核心词汇。猴子正在树上向上爬，婴儿正在床上休息，狗正在和球玩。The monkey is ___ the tree. The baby is ___. The dog is ___ with a ball. A. climbing; sleeping; playing B. jumping; sleeping; eating C. climbing; drinking; playing D. eating; playing; sleeping