1 . The temperature had risen ________, but it was still very cold. (slight) (所给词的适当形式填空)

2 . The students are ________ young people between the sixteen and twenty.

A．most

B．much

C．mostly

D．at most

3 . I can ______ be a teacher. I’m not a very patient person.

A．seldom

B．ever

C．never

D．always

4 . There are about one million words in English. ________, most people use only about ten thousand of them.

A．Moreover

B．However

C．Otherwise

D．Therefore