I can think of many cases students obviously knew a lot of English words and expressions but couldn' t write a good essay.
—The railway station,please.I have to be there in ten minutes. —______,but I’ll do my best.
—Is it for two months ______ they have stayed here? —No,it is only three weeks ______they arrived here.
—I really appreciate______ time to relax. —I don’t doubt ______ able to do so.
When I was at college I ______ three foreign languages, but I ______ all except a few words of each.
—Would you mind giving your advice on how to improve our business management? —If you make ______ most of the equipment, there will be ______ rise in production.