A．She thinks his lectures are boring.
B．She thinks his tests are too long.
C．She doesn’t like his choice of test questions.
D．She doesn’t think he prepares his lectures well enough.

A．The cost is very. high, and only the rich people can afford it.
B．The systems of communication are not so developed.
C．The travelers cannot speak the foreign language.
D．Tourist organizers don’t allow people to get more contact with local people.