【題目】Henry was ill，so I________go there by myself．

A．can

B．has to

C．have to

D．had to

【答案】D

【解析】由句意可知我必須獨(dú)自去那兒。前半句用一般過(guò)去時(shí)態(tài)，這里要時(shí)態(tài)一致。

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