A. economic B. rather than C. eraser D. navigator A. helicopter B. news C. by oneself D. book A. parking B. fall in love C. crayon D. misunderstand A. blank B. delicate C. for now D. ruler A. in public B. pencil C. due D. in the future A. your B. seriously C. wreck D. bedraggled A. no B. difficulty C. cheekbone D. well-known A. sheet B. maybe C. pencil box D. than A. pen B. jet C. Singapore D. get lost A. bag B. foul C. air-resistance D. arena