tell him about (it/this) 为什么?

tell him about (it/this) 为什么? 1.改错 Why don't tell him about it?2.填空 This is the （ ）interes I promise I__him this evening and tell him all about it. As soon as l ( ) him,lwill tell him about it 英语语法 动名词.It's no use telling him about.tell为什么用动名词. please tell him about it when she ____tomorrow.为什么不用将来时will ------ ------ you tell him about it?OK.I will do it. I find it necessary to tell him about it. You -----(不应该)tell him about this matter I will tell him about it as soon as he___________. Tell him something about it,too(否定句） please remember ( )[tell] him about it when he ( )[come] bac