I wantyousolve this problem.
A. help
B. helped
C. helping
D. to help
I have worktoday.
A. do
B. doing
C. to do
D. did
Let's basketball together.
A. play
B. to play
C. playing
D. to playing
蒋介石集中重兵,向南方各根据地的红军发动大规模的"围剿"开始于( )。
A. 1931年10月
B. 1931年1月
C. 1932年底
D. 1930年10月