单选题 Computer technology makes it ______ for people to work from home.

单选题 It is important that you ______ our competitors...

单选题 It is a fact ______ most deaths from lung cancer are caused by smoking.

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 ______ ...

单选题 Women ______ drink more than two cups of coffee a day...

单选题 You cannot cancel your order ______ you change your mind...

单选题 John decided to ______ the present job...