【2015·陕西】At college, Barack Obama didn’t know that he the first black president of the United States of America.
| A．was to become | B．becomes | C．is to become | D．became |
相关试题
If you write something and send it immediately by email, which you ___later regret, there is no chance for second thoughts．
| A．would | B．should | C．have to | D．might |
Lucy's new job paid twice as much as she had made __ in the restaurant．
| A．working | B．work | C．to work | D．worked |
You'd better not leave the medicine __ kids can get at it．
| A．even if | B．which | C．where  |
D．so that |
—What do you think of the new English teacher?
—___she is an elegant lady, she can be extremely difficult to work with．
| A．Even if | B．When | C．While | D．Once |
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