—Susan, what are the advantages of MP5 players?—Mom, they are smaller and lighter ______ they can be carried very easily.
---Would you like another cup of coffee? ---__________ It tastes good.
All of us had fun ____________ around the campfire last night.
Daniel is always willing ________ others _________ with their Math.
---____________________? ---He is generous and polite.
Many American students think Chinese is __________ any other foreign language.