2014
高考英语单项选择二轮训练（15）及答案单项选择（ ）21. i often have conversations with john over telephone, while i keep in touch with tom by letter. a. /; the b. the; / c. /; a d. the; a （ ）22. with his son ______, the old man felt unhappy. a. disappointed b. to be disappointed c. disappointing d. being disappointed （ ）23. living in the central australian desert has its problems, ______ obtaining water is not the least.
