I insisted that a doctor immediately.A. has been sent forB. sends forC. Will be sent forD.

问题补充：

I insisted that a doctor immediately.

A. has been sent for

B. sends for

C. Will be sent for

D. be sent for

答案：

A. has been sent for

B. sends for

C. Will be sent for

(答案→)D. be sent for

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