第一节:单项选择题(每小题1分,满分30分)
从A、B、C、D四个选项中,选出可以填入空白处的唯一最佳选项。
21.The building_______ now is our school library. That is one of
the buildings_______ in 1980 and we’ll have another one______ next year.
A. is repaired;
built; built
B. being repaired; built; built
C. being repaired;
build; built D. be
repaired; was built; built