Варианты ответа:
Первое:
1:was going
2:went
3:has gone
4:had gone

Второе:
1:strolled
2:was strollen
3:had strollen
4:was strolling

Третье:
1:washed
2:was washing
3:had been washed
4:would be washed

Четвертое:
1:amazed
2:is amazed
3:was amazed
4:haw amazed

Пятое:
1:never saw
2:had never seen
3:has never seen

Шестое:
1:was tossing
2:has tossed
3:would toss
4:tossed

Седьмое:
1:are doomed
2:were doomed
3:had doomed
4: doomed

Восьмое:
1:have helped
2:help
3:was helping
4:had helped