THEY DON'T FORGET _________ A SHORT VACATION IN CUC PHUONG NATION...

30. - File thứ 1: anh11new_231201916
File thứ 1: anh11new_231201916
30. They don't forget _________ a short vacation in Cuc Phuong National Park last year.A. to spend B. having been spending C. having spent D. being spent