专业、全面、易懂的全领域名词百科

He_busyyesterday,orheyouwithyourexperiment.

题型：单选题

选项

A. was; had helped

B. was; would have helped

C. had been; would have helped

D. were; had helped

正确答案：B

He_____busyyesterday,orhe____youwithyourexperiment.