Question

–What should I do, doctor?
--________ healthy, you should take more exercise.

A．Keep

B．Keeping

C．To keep

D． Kept

Answer 1

C

考查動詞不定式。句意：----醫生，我應該做什么？---為了保持健康，你應該多做鍛煉。故選C。這里動詞不定式做目的狀語。