_____ number of the students is 4，0000  , much more than last year.

The plane didn’t take off         the heavy rain

---I am really _______ because I have been studying all day. --- Have a cup of tea and rest, and then you’ll feel better.

----I like working with Mr. Dean, he is quite       . ----Me too, I can easily know what he is thinking about.

 I thought _______ very useful to know the customs of foreign countries.