Ответ:
1. Does Mary usually go to the college on foot?
Mary usually goes to the college on foot, doesn't she?
2.Were my relatives in Moscow last year?
Last year my relatives were in Moscow, weren't they?
3. Will the students visit our local museum soon?
The students will visit our local museum soon, won't they?
1: John is cleverer than his friend Bob.
2. Richard is the cleverest boy in this group.
3. The bedroom is darker than the kitchen.
4. The wallpapers in the hall are the darkest ones in our flat.
A) swam потому что там was то есть был, это прошедшее время