Ответ:
B.
1. A:may
B: wasn't able to; had
A: don't need
2. A: don't have to; can
B: need; could
A: can't
C. 1. My house is further to the center city than yours.
2. The plain is safer than the train.
3. The Royal Hotel is cheaper than The Central Hotel.
4. I think Mr. Sanders is the best teacher in our school.
5. Julie is the most interesting person I have ever met
6. Window seats are more comfortable than aisle seats
D.
1. Do you know how much is city tour cost?
2. Could you say when Ronnie's Pizza opens?
3. Excuse me, can I buy souvenirs?
4. Can you say how the tour guide look like?