单选题 You had better ______ some time every day for sports so that you can keep yourself energetic.

单选题 I think it's really ____ hard work for me to finish the job in twenty minutes.

单选题 ____ wake up your sister,Ben.She needs a good sleep.

单选题 Linda's father hates waiting in long lines.I think he's just not very____.

单选题 Alice felt happy to receive some gifts on____birthday.

单选题 Would you like to go to the concert with me? —I'd love to,____I'm afraid I have no time.

单选题 He promised ____ his old friend during his stay in Tianjin.

单选题 We ____ pay to get into the concert.It's free.

单选题 Richard turned off the computer after he had finished ____ the email.