A. build B. six C. grammar D. sheet A. bison B. metal C. society D. inexpensive A. nitrogen B. solve C. surround D. in surprise A. hair clip B. smart C. neither nor D. enough A. take a walk B. crowded C. debtor D. burrow A. who B. dormitory C. bottle D. chess A. means B. special C. vicinity D. impending A. polish B. brave C. support D. oceanarium A. ladder B. role C. I think so D. radiance A. measure B. counteract C. polo D. glue