语法与词汇Not only ______a promise, but he also kept it.
语法与词汇Are there any ______for believing that there is life on other planets?
语法与词汇The population of many Alaskan cities has ______doubled in the past three years.
语法与词汇This clothes has ______greatly after several washings.
语法与词汇You have to ______most of the responsibilities in the fire.
语法与词汇The only ______to the small village is along the muddy road.