I’ll come to listen to your speech at 9:30 tomorrow morning.— I regret to tell you that by then my speech ____

21—— He runs his own company at the age of 21. ——-___________________

The bus hit against a tree in the fog and __________to the deep valley, with ten passengers killed and twenty wounded.

Look out! There’s a kangaroo wandering on the road! — ____ it! That was luckyIt can damage my car really badly

Every student is required to watch the teacher carefully before _____ the chemistry experiment. [ ]