单项选择题

Because of my poor Spanish, I'm afraid I can't make myself ______.

A. understand
B. to understand
C. understanding
D. understood
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单项选择题
() in India, the banana was brought to the America by the Portuguese who found it in Afric

A. Originally cultivated
B. Originally being cultivated
C. Having originally cultivated
D. Although it originally cultivated
单项选择题
I have given up trying to convince him; there is no point ______ with him.
A. on arguing
B. in arguing
C. to argue
D. for arguing
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