Did you know that the earth is home to________animals？
| A．million |
| B．millions |
| C．million of |
| D．millions of |
We may meet all kinds of difficulties, but we should be confident enough to _________ any challenge.
| A．put on | B．get on |
| C．take on | D．try on |
Wow! You’ve got so many clothes．
-- But ______ of them are in fashion now.
| A．none | B．both |
| C．neither | D．all |
We find __________ impossible for us to learn a foreign language well in a short time.
| A．that | B．this | C．one | D．it |
--Who’s the most modest boy in your class?
--Daniel．He never_________ in publiC．
A． gets offB． shows off
C． takes off D． turns off
Is that man Mr．Smith?
It _____ be him．He has gone to New York on business．
| A．may not | B．needn’t |
| C．can’t | D．mustn’t |