I don‘ t know how to use a computer,_________.

His parents wanted him to be a doctor, _____ they thought was a steady and well-paid job．

The boy went swimming in the deep lake，________ his mother’s fear for his safety

I failed again. I wish I _________ harder.—Butyou _________.

Facts prove that the world’s economic development is not a win-lose game but one in which all _____ be winners.