30. A person’s _____ body temperature is about 37℃．
31.
| A．ordinary | B．normal | C．common | D．Usual |
I’m moving to the countryside because the air there is much fresher than ________ in the city.
| A．ones | B．one | C．that | D．those |
He is a student of ___.
| A．Class First | B．the Class One | C．Class One | D．First Class |
I felt so bad all day yesterday that I decided this morning I couldn’t face ________ day like that.
| A．other | B．another | C．the other | D．others |
The medicine is on sale everywhere. You can get it at ___ chemist’s.
| A．each | B．some | C．certain | D．any |
—Did you have any trouble with the customs officer?
—________ to speak of.
| A．No | B．Nothing | C．None | D．Neither |