高考问答蓝猫丁香色是不纯正吗:各位大侠举手之劳,帮帮我!!我定报恩!!
来源：百度文库 编辑：高考问答 时间：2024/05/19 23:34:31
While he ____ his homework,his mom ____in the kitchen.
A.was doing, was cooking
B.did, cooked
C.was doing, cooked
D.did, was cooking
A.was doing, was cooking
B.did, cooked
C.was doing, cooked
D.did, was cooking
C~~~~~~~~~ 8
C
while后加过去进行时，后半句就要用过去时
C