Mary must keep her mind on her medical studies now, so it would be years ______ she could think about marriage.
A.before | B.when | C.since | D.until |
Tony, mind your manners. Don’t _______ while others are talking.
A.cut in | B.cut off | C.cut down | D.cut up |
The companies are working together to createthey hope will be the best means of transport in the 21st century.
A.which | B.that | C.what | D.who |
The hotel wasn’t particularly good. But I ____ in many worse hotels.
A .was staying B, stayed C. would stay D. had stayed
Scientists are trying to develop a special material, _______ they will make use of in space.
A.it | B.that | C.what | D.one |
The education of _______young is always _______ hot and serious topic in modern society.
A.the; / | B.a; the | C./; the | D.the; a |