A. hurdles B. appear C. unspoken D. error A. useful B. accustom C. spear D. recovery A. beside B. toothbrush C. bear D. legal A. guest B. clear C. go out D. lava A. outdoor activity B. boulder C. binoculars D. year A. sphere B. kilo C. fear D. sparrow A. framework B. enrich C. hear D. host A. gatekeeper B. primary school C. near D. microscope A. dear B. be supposed to C. shelter D. kind A. tear B. worker C. be connected with D. punchline