句型转换根据括号内的要求改写句子，在答题卷相应的横线上填写答案，每空限填一词。
What does this sentence mean? (保持意思基本不变)
What is the                      this sentence?
When the twin sister Huihui was born, she weighed just 1950 grams. (保持意思基本不变)
The twin sister Huihui weighed just 1950 grams                   .
They offered us much help last year.(保持意思基本不变)
They        _______us_      ________ much help last year.
We bought a special program in order to help the computer recognize our voice.(对划线部分提问)
        did you            a special program?
He can’t finish the work in such a short time.(保持意思基本不变)
                  for him to finish the work in such a short time.