Question

【题目】—When will Wuxi Metro Line 3 open?
— _______ next year. Only 10% ______ been built.
A.Until； has
B.Until； have
C.Not until； has
D.Not until； have

Answer 1

【答案】C
【解析】句意：—无锡地铁3号线何时开放？—到明年才开放。只有10%已经建成。Not …until直到……才。Only 10%作主语，谓语动词该用第三人称单数形式。所以选C。