附加题(选答,共10小题,每道题1分)1. Not having a good command of English can be a serious ________ preventing you from achieving your goals.
We can't _____ one to change the habits of a lifetime in a short time.
American women were _____ the right to vote until 1920 after many years of hard struggle.
Roses are quite _____ flowers in English gardens.
The illness from which Mary is suffering has now been _____ as hepatitis (肝炎).
A completely new situation is likely to _____ when the school leaving age is raised to 16.