Переделать в отрицательные предложения 1)there were flowers in this vase yesterday 2)they have just left 3)i arrived home late last night 4)i've already swept the floor 5)breakfast was ready at 8 o'clock in the morning 6)we saw him last friday 7)he has already had supper 8)you were at the seaside last summer

1. there weren`t  any  flowers in this vase yesterday.2. they haven`t  left yet.3. i didn`t  arrive home late last night.4. i haven`t  swept the floor yet.5. breakfast wasn`t ready at 8 o'clock in the morning.6. we didn`t see  him last friday.7. he hasn`t  had supper yet.8. you weren`t at the seaside last summer.

1)there weren't flowers in this vase yesterday 2)they haven't just left 3)i didn't arrive home late last night 4)i've not already swept the floor 5)breakfast wasn't ready at 8 o'clock in the morning 6)we didn't see him last friday 7)he didn't has already have supper 8)you weren't at the seaside last summer

waste     to waste

protection     to protect

destraction     to destroy

pollution     to pollute

damage     to damage

damage     damaging

environment     environmental

harm     harmfull

danger     dangerous

safety     safe

 

1. yes ofcourse, its important part of school life, and especially for discipline.

2. we have primary and high schools, and some private schools