How long has John been here?— Two years, _______ he still has no friends

He always brings me a pretty gift __________ he comes to visit me.

She is _____a growing number of Chinese people who find it increasingly difficult to find time to readevery day.[ ]

Susan, whatare the advantages of MP5 players?—Mom, they aresmaller and lighter ______ they can be carried very easily.

______ from the space, the earth, with water _______ seventy percent of its surface, looks like a blue ball.