Unit 3 Tomorrows world,Section Grammar被动语态,was given,had been cleaned,will be taught,are being watered,is loved,have been made,can be used,neednt be done,wasnt noticed to enter,was seen to walk,I was given,be made good use of,My house needs repairing/to be repaired.,The old require looking after carefully.,This question is easy to answer.,The bag is very heavy to carry.,are said to be,It is said that,was said to have invented,It was said that,had invented,谢谢观看,
