This summer vocation I am going to do a lot of to prepare for the senior high school.A. j

问题补充：

This summer vocation I am going to do a lot of to prepare for the senior high school.

A. job

B. work

C. invention

D. service

答案：

A. job

(答案→)B. work

C. invention

D. service

解析：句意：今年暑假我打算做许多工作来为高中做准备，A. job 工作；B. work工作，学习；C. invention发明；D. service服务；结合语境故选B