A. deep B. task C. till D. theory A. kick B. room C. the UK D. icon A. sudden B. airline C. lost and found office D. silk worm A. attend B. one another C. shiny D. learn A. be used to B. invasion C. snowball D. citizen A. door B. very C. ring D. No eating or drinking A. vessel B. hallway C. tailor D. drop A. suspicious B. as usual C. shower D. lifetime A. crop B. derrick C. beer D. philosopher A. tangyuan B. exciting C. windowsill D. up to standard