Lily isn’t here. When she .A. does; leaveB. is; leavingC. will; leaveD. did; leave

问题补充：

Lily isn’t here. When she .

A. does; leave

B. is; leaving

C. will; leave

D. did; leave

答案：

A. does; leave

B. is; leaving

C. will; leave

(答案→)D. did; leave

解析：句意：丽丽不在这儿。她什么时候离开的？结合语境可知下文指的是刚才发生的动作，故用一般过去时态，选D。