问题描述：
have not heard from Mark for a long time.I’m quite worried about him.
— I have not heard from Mark for a long time.I’m quite worried about him.— OK.I’ll let you know the minute I ___ anything..A.will hear B.am hearing C.heard D.hear
为什么选D,
— I have not heard from Mark for a long time.I’m quite worried about him.— OK.I’ll let you know the minute I ___ anything..A.will hear B.am hearing C.heard D.hear
为什么选D,
问题解答：
我来补答展开全文阅读