A. friend B. unfriend C. friendly D. unfriendly
A. radio station B. computer lab C. classroom D. training center
A. What’s B. What are C. What D. That
A. many and more B. more and more C. much and much D. many and many
A. work B. to work C. working D. worked
A. by heart B. from heart C. to heart D. in heart
A. tire B. tired C. tiring D. tires
A. middle B. junior C. senior D. vocational
A. to B. in C. at D. with
A. patients B. doctors C. teachers D. customers
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