51.——“What courses are you going to do next semester?”——“I don’t know. But it’s about time（ ）on something.”

29.If you are an athlete, strong abdominal muscles help you ensure a strong back and freedom from injury during（ ）upper-body movement.

28.（ ） to unplugging the alarm clock and trusting your ability to wake on time on your own, you should probably ease yourself into the new arrangement by keeping a very regular schedule for several weeks.

27.Israel and Hamas had reached a deal on extending the（ ）ceasefire by an extra 24 hours until Tuesday at midnight.

26.“I’m leaving the country soon,” he told a（ ）convened group of reporters.

25.Chris ran（ ）John at a sporting-goods trade show and the two quickly struck（ ）an easy rapport.

24.Mutual funds are thus best for investors who don’t want to take the time to study stocks in detail or who（ ）the resources to build a portfolio.

23.The Foreign Secretary tried to（ ）doubts about his handling of the crisis.

22.The police department came under strong criticism for both the death of an unarmed man and its handling of the（ ）.

21.The Attorney General ordered a federal autopsy of Brown’s body, seeking to（ ）the family and community there would be a thorough investigation into his death.

20.The sentence “I wish I had been more careful in spending money” expresses the speaker’s（ ）.