-What are you doing this summer vacation?-I am_ A.going bike riding B.going bike ride C.g...-What are you doing this summer vacation?-I am_ A.going bike riding B.going bike rideC.go riding bike D.go bike riding
问题描述：
-What are you doing this summer vacation?-I am_ A.going bike riding B.going bike ride C.g...
-What are you doing this summer vacation?
-I am_
A.going bike riding B.going bike ride
C.go riding bike D.go bike riding
答
A
答
选A
I am 后面加doing 所以是going
riding 是因为go 后面加动词的ing形式
答
A.going bike riding
答
A。