A. fuel B. desertification C. in cash D. this A. frame B. exclusive C. silk D. go A. airplane B. apple C. rainforest D. pow-wow A. in return B. dog C. crocodile D. worry about A. doggie B. new C. conclusion D. read A. sunny B. rhino C. bye-bye D. power A. egg B. turn out C. too many D. walk the dog A. smile B. help C. own D. skateboard A. middle school B. variety C. separate D. action A. bed B. lunar month C. is D. holiday