Прошу express the same using passive constructions.выразить то же самое с использованием пассивных конструкций. 1.we wasted a lot of time when we were looking for the right house. 2. people can do a lot to stop the destruction of forests. 3.people mustn't use nuclear weapons. 4.biologists will tell you a lot about extinct animals of our planet. 5.you ought to rewrite the text to make it look nicer. 6.you should pack these fragile cups very well or they may break.

Alot of time was wasted when the right house was being looked for.  a lot can be done to stop  the destruction of forests.nuclear weapons mustn't be used.  a lot can be told about  extinct animals of our planet.  the text ought to be rewritten so that it will look nicer. (здесь немножко объясню. нам в этом предложении надо использовать "чтобы", но to + глагол (to make)  здесь уже не подойдет по смыслу (нельзя сказать - этот текст должен быть переписан чтобы сделать его лучше  ), поэтому вместо to make  it look nicer  используем  so that it will look nicer  (= чтобы) он выглядел лучше - so that как раз используется, когда в предложении есть слово will.) these fragile cups should be packed very well or they may be broken. 

They are standing here. they were standing when he came in. they will be standing when he come. we are sitting at the table. we were sitting at the table when mother came in. we will be sitting at the table when mother come you are playing chess. you were playing chess when farther came. you will be playing chess when farther come i am reading a newspaper. i was reading a newspaper when sister came in. i will be reading a newspaper when sister come peter is speaking english. peter was speaking english when brother came in peter will be speaking english when brother come

1. there a book on the desk. 2. there many flowers on the window-sill.  there     a magazine and some newspapers on the little table. are. there any shops near the house? no, there aren't any. there are some apple-trees and one plum-tree in the garden. there are one girl and four boys in the classroom. on the walls there .are .. many pictures. there arre a cow, a pig, and a horse in the field. there are no children there. are there much snow in the yard? yes, there .are .. a lot of snow everywhere.   my brother doesn' t  (get up) early on sundays.   i don't  (watch) tv in the morning.   they doesn't (spend) much time in the language laboratory. my friend doesn't (understand) grammar rules well. my parents often doesn't (pass) the time in the country. pete doesn't (take part) in our concert.