1 She had been waiting for an hour before Helen arrived.
had been waiting-past perfect continuous; arrived-past simple
2 Larry had been looking for his glasses for over an hour before he found them.
had been looking-past perfect continuous; found- past simple
3 They had been playing football for over an hour before Tom scored.
had been playing - past perfect continuous; scored -past simple
4 Jane had been driving for over two hours before she reached Smith's cottage.
had been driving - past perfect continuous; reached - past simple
5 Mr Smith had been working the company for ten years before he decided to leave.
had been working-past perfect continuous; decided- past simple
Объяснение:
1)how many dog breeds are there in the world?
сколько пород собак существует в мире?
359 breeds are recognized.
2) How many polar bears are there on earth?
from 22 to 31 thousand
3) why do not pigeons fly away to warm regions for the winter?
they are adapted to our environment
4)how much can ants lift?
the ant lifts 50 times its own weight
5)How much winter stocks do proteins need?
they fill the hollow with nuts, rough, etc., so that it will last for the whole winter
6) how much do sharks weigh?
Sizes The size of a typical adult white shark is 4-4.9 meters and weighs 680-1100 kg
