送交者: five 于 2016-03-01, 18:13:24:

回答: is ...s? 由 silxirt 于 2016-03-01, 15:34:54:

• I thought incorrect grammatically, is... s, or ..s is..., but they are correct (无内容) - hopelessless (0 bytes) 2016-03-02, 00:29:01 (802283)
• A billion dollars is a large sum of money. (无内容) - five (0 bytes) 2016-03-01, 18:17:02 (802261)

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