必修4Unit1-2Unit 1 Women of achievement 一、请根据各句上下文的意义，选择正确的单词填入空白处。第一组：medical, communication, welfare, behave, nest, achieve, rate, explain, condition, worthwhile 1 The heavy snow prevented _ with the outside world for three days.2 I hope my kids will _ themselves while I am away.3 Only by working hard can you _ you goal in time.4 The reason Peter _ to us for his lateness was unreasonable. 5 It cost me a lot to travel around the world, but it was reall
