(2013·江苏，16)I am always delighted when I receive an e－mail from you.________the party on July 1st，I shall be pleased to attend

下列各句中，加线的成语使用恰当的一项是（  ）

It is well known thatthe Internet will let people have to huge amounts ofinformation from their own homes.

Listen! Helen is singing in the next room.– It be Helen. She has gone to Guangzhou.

Mrs. Smith often goes to visit those AIDS patients in hospitals to cheer up.