—We didn’t find the Blacks___________the lecture. —No one had told them about___________a lecture the following day.
I found the island a wonderful place for our experiments _______ the hot weather.
He usually goes to work by bike _______ it rains.
She knew nothing about his journey _______ he was likely to be away for three months.
---- “How did the robber get in?” ----“______ an open window on the first floor.”
_______ reading the letter, what has he done?