The teacher told us nothing______difficult if we put our hearts into it.A、isB、w

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问题 The teacher told us nothing______difficult if we put our hearts into it.

选项 A、is
B、was
C、will be
D、were

答案 A

解析 宾语从句中的时态。当宾语从句表达的是客观真理、规律时,其时态用一般现在时,故选A。
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