_____ of them knew about the plan because it was secret.
| A．Some | B．Any | C．No one | D．None |
Mike did the homework _______ it took me.
| A．one-third a time | B．one-third the time |
| C．a one-third time | D．one-third time |
Oh, my God! Is this your room? The furniture here remains _____ with such thick dust!
| A．covered | B．covering | C．to cover | D．be covering |
Her new book on how to get along with others is to _______ next month.
| A．give out | B．get out | C．turn out | D．come out |
Jerry has promised to keep the secret, so he won’t tell anyone _____ asked to.
| A．until | B．now that | C．unless | D．even though |
— Well, Jane has many advantages, too.
— Oh, yes. _______ others are weak, she is strong.
| A．If | B．When | C．Though | D．Where |