A. considerable B. show C. clean up D. your A. data B. sure C. scene D. work from home A. take turns B. nose C. research D. envious A. keep to the right B. generate C. as well as D. traveller A. keep B. highway C. polar D. the same as A. lorry B. its C. slight D. mango A. good-bye B. subscribe C. exhibition D. jumping A. wretched B. help yourself C. else D. silicon A. teach B. toward C. happening D. hinder A. goodness B. attack C. Canadian D. rostrum