Whenyouthese shoes?haveboughtdidbuydobuyarebuying​

Didbuy
When did you buy these shoes ?

did buy (когда ты купил эти туфли?)

Объяснение:

1.The root grows thicker with age and helps support the tree.

2.In trees as large as the coast redwood of California, the water may travel 400 feet from the lowest roots to the highest leaves.

3.This seems against the laws of nature as the most efficient suction pump can raise water to only 33 feet.

4.Bryophytes are very small, even the "giants" of this group rarely grow taller than 15 centimetres.

5.The ferns are better adapted to land than bryophytes.

6.We probably depend much more on the flowering plants than on any other type of plants.

7.In vascular plants the sporophyte is more conspicuous than in bryophytes.

8.A genus is a larger group than a species.

9.Species of one genus are closer related to each other than to other kinds of plants.

10.All plants in the world may be divided into phyla, which are farther divided into smaller groups called classes.

вроде бы так

I used to have a dog when I was a child
He used to be noisy when he was young
She used to go to the country when she was 7
I used to walk many years ago
They used to drive fast when he was 20
Did you use to have a dog?
Did she use to go to the country?
Did he use to drive fast/
Did they use to walk 5 years ago?
Did you use to play tennis 5 years ago?
I didn't use to walk when I was 5
He didn't use to drive when he was 18
She didn't use to go to the country when she was 7
My mother didn't use to play tennis when she was a pupil
He didn/t use to have a dog