________was difficult to save the places and buildings _____destroying their old beauty.
I’ve never heard one-year-old boy can play ________piano.
Do you plan to take a vacation this month?—Yes, we ________ to Hainan and _______ there for five days.
Jack ______ allowed to go to the movies with me yesterday evening．
My brother and I will go to the library tomorrow.—_______. Shall we go together? [ ]