_______ you work hard, you won’t solve this problem.
| A．Even | B．As | C．Unless | D．Since |
They were hunting for a personhima stepping stone.
| A．like; as | B．like; like | C．as; like | D．as; as |
Alone as she is, she is kept so busy with her work for women’s rights that she feels ____ lonely.
| A．nothing but | B．none but | C．everything but | D．anything but |
—___John come here tonight?
—I’m not sure, but he ______ stay at home.
| A．May, might | B．Can, must | C．Must, might | D．Can, might |
—Dad, would you buy me an MP3 player if I do well in the final exam?
—I , I promise.
| A．would | B．shall | C．should | D．will |
—Without your help, we _____ this task on time.
—My pleasure.
| A．don’t finish | B．will not finish | C．didn’t finish | D．would not have finished |