单项选择题
A.strengthen B.control C.abandon D.exercise
John is (collaborating) with Mary in writing an article...
单项选择题John is (collaborating) with Mary in writing an article().
A.cooperating B.competing C.combining D.arguing
A greatdeal has been done to (remedy) the situation().A...
单项选择题A greatdeal has been done to (remedy) the situation().
A.maintain B.improve C.assess D.protect
Theseprogrammes are of (immense) value to old people()....
单项选择题Theseprogrammes are of (immense) value to old people().
A.natural B.fatal C.tiny D.enormous