The Adventures of Huckleberry Finn, _______ the USA in the mid 19th century, _______ a masterpiece.
| A．set in; proves | B．setting in; is proved |
| C．is set in; proves | D．was set in; is proved |
相关试题
People try to avoid public transportation delays by using their own cars and this ______ creates further problems.
| A．in short | B．in turn | C．in doubt | D．in case |
. A notice was ____in order to remind the students of the changed lecture time.
| A．sent up | B．given up | C．setup | D．put up |
. In our class, when the bell rang and the teacher closed his book, it was a ______for everyone to stand up.
| A．mark | B．chance | C．signal | D．measure |
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