Помогите избрать верный вариант:1.Steve suddenly woke up. Someone shook / was

Помогите выбрать верный вариант:
1.Steve suddenly woke up. Someone shook / was shaking his shoulder.

2.By the end of the / a war, more than 186,000 black soldiers had joined / joined the Union army.

3.The / an official language of Sweden isSwiss / Swedish.

4.0 / the children were allowed to doanything / something they liked on Sunday.

5.They were having / had a quarrel every time they met.

6.The / a station master helped us buy the / a ticket, butthe / a train had already left / already left.

7.Would you like any / some more pasta and salad? No more, thanks. Im quite full.

8.Jim walked / was walking when he noticed a / the car coming down a / the road.

9.Ive seldom had any / some problems with my PC since I bought it three years ago.

10.Alex fell in love with Michelle about six months ago though they knew / had known each other for three years.

11.The Scottish / Scots Parliament is the / a democratically elected body comprising 129 members.

12.By the time they met they were / had been both experienced and effective officers.

13.The 17th century was the great age of Holland / Dutch painting.

14.Julia looked thin and hungry because she was / had been working out and dieting.

15.The Danes / the Danish refused to surrender and the British / Britons fleet started a four-day bombardment of Copenhagen on September 2, 1807.

16.We had been walking / had walked ten miles inthe / a rain since an early breakfast and we were starving.

17.I hadnt slept / hadnt been sleepingfor 27 hours and was exhausted.

18.As his experience was growing / grew, Collins devoted more time to arts study.

19.Helens husband is a Polish / Pole.

20.If you find some / any incorrect information, please send the / an email to the operator.