单选题 You cannot cancel your order _______ you change your mind within three days.

单选题 John decided to _______ the present job in order to travel around the world.

单选题 Women _________ drink more than two cups of coffee a day have a greater chance of having heart disease than those _________ don’t.

单选题 It is important that you ___ our competitors to know our plan of developing new products.

单选题 Michael's new house looks like a palace, compared _______ his old one.

单选题 In an hour, we can travel to places _________ would have taken our ancestors days to reach.

单选题 The question _______ now is where to build the new factory.

单选题 Computer technology makes it_______for people to work from home.