They have been practising the play for half a year. [ ] A. do B. to do C. act D.
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![They have been practising the play for half a year. [ ] A. do B. to do C. act D.](/pic/43_744310.jpg)
They have been practising ________ the play for half a year.
[]
A. do B. to do C. act D. doing
试题答案
答案：D
They have been practising ________ the play for half a year.
[]
A. do B. to do C. act D. doing
答案：D