B1U2 Exploring Englishopposite the buildingbe opposed to going picnickingbehave yourselfbehave well/ behave badlyconfuse Tim with/ and Tomin confusionbe confused about how to study wellbe unique to the countryburn up/ burn downbe burnt to the groundreflect on/ upon his misbehaviorbe visible to naked eyesbe invisible to humanswind up the clockwind up the meetingcome across a new wordcome to an endcome up with a new ideabe unfamiliar with the jobbe unfamiliar to the teacherskeep in contact with himstay in contact with themlose contact with her friendmake contact with your mumIt is likely thatbe likely to dobe unlikely to doin additionbe short for Greekbe short of moneyremind him of the meetingcomment on/ upon the newsmake comments on/ about the newshave a frog in ones throatan entrance to the museumgo downstairs/ upstairsbeyond/ out of recognitionintend to go to the librarybe intended for tourismwith the intention of coming backbe based on a true storybase his ideas on scientific experimentsbasic knowledgebe aware of the importanceraise/ strengthen public awareness of safetyhave trouble (in) learning Englishhave trouble with the subjectspeak of homewonder at the uniquenessfill in a formthe other way roundin common international usebe different to/ from/ than the languageplay safe with what they eat学科网（北京）股份有限公司