2018年军队职称考试——军队职称英语211

 {00}________ again, and you will succeed. 

A.Trying
B.To try
C.If try
D.Try
解析：
本题选D。

{00}________ us in playing chess, Jack?
A.Why not join
B.Why not to join
C.Why not joining
D.Why to join
解析：
本题选A。