I don’t know the reason _______ you were absent from the meeting, and I am not sure that someone will tell me the reason _______ you haven’t told me.
What __ public is concerned about is whether the scientists win be able to find _______ cram for the disease.
Alice was_________the letter from Tom, but it didn't reach her for some reason.
It ______ last night ______ Tom saw an interesting film in Dongfeng Cinema.
Only when class began ______that he had left his book at home.
— How was your job interview? — Oh, I couldn’t feel ______. I hardly found proper answers to most of the questions they asked.