(2019襄阳改编)Tom runs ________ in our class. None of us can catch him in the race.
A.fast B.faster C.the faster D.the fastest
(2019青岛改编)To make rivers ________ than before, everybody is supposed to protect them.
A.cleaner B.cleanest C.the cleaner D.the cleanest
(2019菏泽改编)Be more ________ next time, and you won't make the same mistake again.
A.careless B.careful C.nervous D.honest
(2019重庆A卷改编)Nobody worked the math problem out. It was ________ one of all.
A.difficult B.too difficult C.more difficult D.the most difficult
(2019泰州改编)In order to protect the environment, all the countries should work ________ with each other.
A.close B.closely C.quiet D.quietly
(2019鄂州)—Paul, do you prefer weekdays or weekends?
—Weekdays, of course. I'm ________ on weekends.
A.busy B.much busier C.more busier D.the busiest
