Mother the baby gently on the bed and then bent down to pick up the toy on the ground.A.

问题补充：

Mother the baby gently on the bed and then bent down to pick up the toy on the ground.

A. laid; lying

B. laid; lie

C. lay; lying

D. had laid; lay

答案：

(答案→)A. laid; lying

B. laid; lie

C. lay; lying

D. had laid; lay

解析：本题考查动词及非谓语动词。题中laid为lay的过去式，表示“放，搁”；lying on the ground作定语，修饰名词the toy。故选A。