—Do you like our English teacher? —Yes. I think his class is very ________.

Traveling around big cities by taxi can cost a lot of money, but it's usually        to take the underground train to most places.

Li Hong can speak English as ______as native speakers.

— How was your school trip on the farm?—It couldn’t be worse! I don’t            want to talk about it.

Staying up late is _______ your health.