－Can you tell me Kitty’s address.－I don’t know, either. But I’ll tell you her address when she ______ to me.

The policy of the mainland is very clear and straightforward，and the key problem is ______ the leaders of Taiwan will accept it.

Do you think everything ________was true?

she is satisfied with what you have given him and ___ you have told him.

Don’t talk such things ___ you don't understand.