A. ignore B. permanently C. produce D. yuan A. playground B. keep fit C. budget D. backward A. talk in English B. pick fruit C. well-known D. senior A. lantern B. popsicle C. organism D. whole A. ship B. Pacific Ocean C. oxygen D. Springfield College A. tadpole B. disunited C. appendix D. week A. distasteful B. lunar C. murder D. thumb A. steep B. digest C. home and abroad D. constant A. distinctive B. overheads C. Egypt D. one-to-one A. enjoyment B. we C. accelerate D. Shanghai Museum