第一节 单项填空(共15小题;每小题1分,满分15分) 21. languages develop gradually through ____ usage. we should learn the culture at the same time to make ____ use of a foreign language. a. the; a b. 不填;a c. a; the d. 不填;不填 22. — tom, miss lee asked you to go to her office as soon as you arrived. — ____ what did she say? a. i’ve got it.