(2020原创)Sam is doing some ________ about the ancient Silk Road these days.
A.exercise B.operations C.research D.experiments
(2019石家庄28中二模)Though the player was very tired, he still kept running ________ the finishing line.
A.towards B.with C.during D.after
(2019石家庄49中一模)While coming into a new class, you'd better ________ yourself first.
A.avoid B.compare C.expect D.introduce
Lucy has won No. 1 in the 100-meter run, and she hopes to break her own ______ next year.
A.law B.promise C.purpose D.record
(2019乐山改编)It's already 7：50. If you want to get to the meeting on time, you must ________, Jack.
A.hurry up B.ring up C.stay up D.pick up
(2019湘潭改编)—What subject do you like ________, English, math or physics?
—Of course, English.
A.good B.better C.best D.a better
