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