. — We had a good time in the park last Saterday. Pity you weren’t there. — I really come

问题补充：

. — We had a good time in the park last Saterday. Pity you weren’t there.

— I really come but I was looking after my mother in the hospital.

A. must

B. ought to

C. need have

D. should have

答案：

A. must

B. ought to

C. need have

(答案→)D. should have

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