1 I have a blue car, and Mary has a red . 2 He is taking two courses, but his
roommate is taking three . 3 After this movie is over, can we stay to see the other
? 4 After polishing these chairs, could you please polish those in the
library? 5 Nancy’s dress was very pretty, but I rather preferred Mary’s . 6 The little
boy has three pets, and his sister has two . 7 I’m taking five courses, and I enjoy
every . 8 I’ve already had a piece of cake. Do have another . 9 This
is a good book, but I think I prefer the other . 10 He used to have very few suits
but now he has several .11. I need a lot of tennis balls. Can you let me have a few
? 12 Do you prefer big cars or small ? 13 Would you like that tie,
or do you prefer this ? 14 He has two suits: a wool and a cotton
. 15 This house is not as big as that

Green grasshopper can be found from the middle of summer - July to mid-autumn - October. Day grasshopper hiding in the bushes, galloping across fields and meadows, on the night hiding in the bark of trees. Eats as plant food, and insects. Lovely jumper and Jack. In case of danger flit from branch to branch. Sings, uttering sounds of friction in the area of elytra. Lays eggs in the soil, the eggs are stored all winter.

Friends of the ordinary grasshopper :

The brachypterous grasshopper - is very short wings. Lives in the grass, jumped up on the bushes. eats insects. The character are very attentive, just that, immediately frightened by short jumps iconset in the grass.

The cricket field is approximately 2.5 cm long, all the abdomen elytra. Living in a small inclined burrows. Eats plants and insects. Differs loud singing, especially hear crickets in June-July.

Cricket house is smaller in length than the field cricket to 2 see Lives in the dark corners of the house. Summer can be seen on the street in the yard, but in the winter hiding in warm homes. As cricket home resident, singing can be heard in winter and summer.

На окончательную истину не претендую. сомнения указаны курсивом))
1.
1) Furthermore 2) to 3) Both - по смыслу больше подходит Neither, но в конструкции с ним используется "nor", а тут "and" 4) As a result 5) as well as - другой конструкции никогда не встречал 6) in addition 7) as well 8) Neither cows nor sheep... 9) not only / but also 10) either.

2.
1) although 2) yet - подходит по крайней мере по смыслу, но мне не нравится ("всё ещё очень немногие люди решаются стать добровольцами") 3) on the other hand 4) although - зачем тогда там предлог but в предложении? 5) whereas 6) despite 7) Even though 8) but 9) тут не знаю... если нужно подставить его перед вторым предложением, то подойдёт и as и because (лучше выбрать as), а перед первым можно подставить in spite of, тогда будет очень красиво звучать. решайте сами 10) on account of.

3.
1) since 2) such that 3) besides 4)therefore 5) due to 6) as 7) because 8) due to the fact that 9) because 10) on account of