If you _______ spit at all. please spit in the bucket provided.
| A．shall | B．must | C．should | D．may |
相关试题
I’m into the video game, it’s hard to think of anything else. All my focus is on finishing 
the story line.
| A．Unless | B．Once | C．Whether | D．Although |
We live in a world that is changing fast, one changes come at what seems to be an ever-increasing pace.
| A．Unless | B．Once | C．Whether | D．Although |
Panda is one of remaining endangered animals in the world.
| A．The; The | B．A; a | C．The; a | D．不填；the |
I was told that there were about 50 foreign students ________ Chinese in the school, most ________ were from Germany.
A. studying, of whom B study, of them C. studying, of them D study, of whom
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