1 The postman ... while I ... breakfast.
A came/was having
B came/ had
C was coming/was having⭐
2 We ... Joan at the party. She ... a red dress.
A met/wore⭐
B was meeting/wore
C met/was wearing
3 The boys the window when they football.
A were breaking /playing
B broke / were playing⭐
C break were /playing
4 I ... up early this morning. I ... , dressed and then I ... breakfast.
A was getting / washed/ had
B got /washed / had⭐
C got /was washing, was having
5 Our cat Thomas ... all day yesterday.
A slept
B were sleeping
C was sleeping⭐
6 The sun was shining, so I ... to work.
A was going
B were going
C went⭐
7 What ... at 9.30 on Saturday evening?
A did you do
B were you doing⭐
C you did
8 Kate was reading a book while her mother ... dinner.
A was cooking⭐
B cooked
C were cooking
9 They ... the movie for 2 hours last week.
A were watching⭐
B watched
C was watching
a) Hydro power was a clean and environmentally safe method of producing
electricity.
b) In this respect, hydro power is better than burning coal, oil or natural gas.
c) Decaying vegetation, submerged by flooding, may give off quantities of
greenhouse gases equivalent to those from other sources of electricity.
d) Reservoirs can be used for ensuring adequate water supplies, providing
irrigation, and recreation.
e) Damming a river can alter the amount and quality of water in the river
downstream of the dam, as well as preventing fish from migrating upstream to
spawn.
f) These impacts can be reduced by requiring minimum flows downstream
of a dam, and by creating fish ladders.
g) Harnessing this resource would require billions of dollars
а) Гидроэнергетика была чистым и экологически безопасным методом производства
электричество.
б) В этом отношении гидроэнергетика лучше сжигания угля, нефти или природного газа.
c) Разлагающаяся растительность, затопленная затоплением, может выделять некоторое количество
парниковые газы эквивалентны парниковым газам из других источников электроэнергии.
г) Резервуары могут использоваться для обеспечения надлежащего водоснабжения, обеспечивая
орошение и отдых.
д) Строительство плотины может изменить количество и качество воды в реке.
ниже по течению от плотины, а также предотвращает миграцию рыб вверх по течению в
порождать.
е) Эти воздействия можно уменьшить, установив минимальный поток ниже по потоку.
плотины, и создавая рыбные лестницы.
ж) Использование этого ресурса потребует миллиардов долларов.
Объяснение:
перевод