1、All the work(All jobs) had better progress according to the plan.
2、Their absence added to our difficulty.
3、I can't afford this expensive car.(afford to buy 太累赘了,afford就是买得起的意思)
4、These books are not allowed to be taken out of the reading room.用被动语态好一些,这里的“你”是泛指所有人.
5、As a rule,people say hello in Britain when they meet.as a rule就是通常,和usually重复.