---Look, what have they done? ---Sorry. I think if I __________ another chance, I’ll do it better. 

The famous scientist grew up ________ he was born and in 1930 he came to Shanghai. 

— Well, Jane has many advantages, too.— Oh, yes. _______ others are weak, she is strong.

That dog ought to be destroyed        it attacks any more children.

I don’t doubt ________ the plan will be well-conceived.