Kitty, how does your brother look like— .

I’m sorry to keep you waiting for a long time. —Never mind. I got here only .

Today or tomorrow?— What are you talking about?— We are talking about _______ to give a talk on WTO

He _______ go out with his parents, but now he _______ staying at home alone.

It is very kind ______ you to help me with my lessonsbecause it is very difficult ______me to learn them well.