she doesn't know ___ .A to take which stepshe doesn't know ___ .A to take which step B.to take step C which step to take D.to take the step 选择什么 为什么
问题描述:
she doesn't know ___ .A to take which step
she doesn't know ___ .A to take which step B.to take step C which step to take D.to take the step 选择什么 为什么
答
c
答
选C,这是疑问代词+不定式的用法