单项选择题
A.played B.play C.playing D.plays
He（）himself quickly to the new condition of his work.A....
单项选择题He（）himself quickly to the new condition of his work.
A.changed B.altered C.adjusted D.varied
I have spent a lot of time（）working on this problem.A.a...
单项选择题I have spent a lot of time（）working on this problem.
A.at B.–（不填） C.on D.with
She likes to spend time（）with her grandchildren.A.playB...
单项选择题She likes to spend time（）with her grandchildren.
A.play B.to play C.playing D.played
