Owing to our ____________friendship, we can offer you a discount
A. long term
B. long-term
C. long terms
D. long-terms
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The young woman was born in America.
A. 对
B. 错
RosettaStone is the only PC-based language learning product.
A. 对
B. 错
Sometimes it is difficult to stay interested in a language for a long time.
A. 对
B. 错