(2018张家口二模)It's a________ of time to play computer games. We must make good use of time and study hard.
A.style B.skill
C.mess D.waste
(2018邯郸一模)The taxi driver________ David's lost bag to him. He was very grateful to the driver.
A.left B.borrowed
C.returned D.threw
(2018 深圳改编)Jack usually ________ to help at the underground station on weekends.Let's join him next Saturday.
A.offers B.refuses
C.forgets D.stays
(2018宜昌改编)A research suggests that walking helps people live longer, but it________ on when and how they walk.
A.remains B.separates
C.reviews D.depends
(2018泰州)Many tourists prefer fivestar hotels because they think expensive hotels always ________ guests with better service.
A.prevent B.protect
C.present D.provide
The speaker showed some ______ examples to make the science report easy to understand.
A.awful B.stupid
C.proper D.thick
