问题描述：
英语翻译
See to it that you include in the paper whatever questions they didn’t know the answer to last time.
我不懂就在后面的to last time.last time是指延迟时间吗?还是指上一次的意思?可以解释下they didn't know the answer to last time这个to是用作什么吗?
See to it that you include in the paper whatever questions they didn’t know the answer to last time.
我不懂就在后面的to last time.last time是指延迟时间吗?还是指上一次的意思?可以解释下they didn't know the answer to last time这个to是用作什么吗?
问题解答：
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