—Are you sure you have to? It's been ver
题型:选择题
问题:
—Are you sure you have to? It's been very late. —I don't know _____ I can do it if not now. |
A. where B. why C. when D. how |
—Are you sure you have to? It's been very late. —I don't know _____ I can do it if not now. |
A. where B. why C. when D. how |