点津:
admit 的意思是“同意进入,允许进入”(经常与to连用)。
Latecomers will not be admitted until the interval.
迟到者在休息时间方可入场
allow 泛指“一般性同意,允许”。
Passengers are not allowed to smoke.
乘客不得吸烟。
permit 常用来表示“上下级之间的允许,批准”。
The prisoners were permitted two hours' exercise a day.
允许犯人每天有两小时户外活动。
approve 的主要意思是“批准(条文,协议等),赞同”(常与of连用)。
I approve of your trying to earn some money, but please don't neglect your studies.
我同意你去挣一些钱,可是请不要误了功课。
答案:admitted, allowed, permitted, approve