ten minutes( )an hour when one is waiting for a phone call.a:seemed b:is seeming c:seem d:seems

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ten minutes( )an hour when one is waiting for a phone call.a:seemed b:is seeming c:seem d:seems

ten minutes( )an hour when one is waiting for a phone call.a:seemed b:is seeming c:seem d:seems
ten minutes( )an hour when one is waiting for a phone call.a:seemed b:is seeming c:seem d:seems

ten minutes( )an hour when one is waiting for a phone call.a:seemed b:is seeming c:seem d:seems
D
ten minutes 虽是复数形式,但指一个【时间段】,故视之为【单数】,后接单三形式 D

D 时间作主语时,作为一个整体看待,其谓语动词要用第三人称单数形式。

c
seem 系动词
就像