問題詳情

29. （ ）By ______ doing exercise every day, you can lose weight(減重) and become healthy.
(A) keep　
(B) keeping　
(C) to keep　
(D) keep with

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)