3. a) With whom Carol sometimes (to travel) by car in summer? b) With whom Carol (to travel) by plane now? c) With whom Carol (to travel) by train last month?

a) With whom does Carol sometimes travel by car in summer?

b) With whom is Carol travelling by plane now?

c) With whom did Carol travel by train last month?

Ответ: a) travel; b) is travelling; c) travel.