问题
选择题
If you really want yourself to be in good health, you must___always___so much.
A.not; be smoking
B.not; have smoked
C.not; to smoke
D.be not; smoking
答案
答案:A
mustn’t be doing与always连用,表示“一定不要总是在做……”,含有“埋怨、不满”等感情色彩。