We didn’t find the Blacks___________the lecture. —No one had told them about___________a lecture the following day.

When _______ you _______ to learn to skate?–Five years ago.

The light in his office is still on. Do you know _______?—To prepare for the material(材料) the meeting will need tomorrow, I think.

may I keep these books?—Two weeks. [ ]

Tom has made great progress this term.— , and .