—I don’t know if Dr. White _______ to the party next week?—I think he will come if he ________ free.
He seldom stays up late at night, _______ he has too much work to do.
I think the new film _______ by Zhang Yimou is worth _____
My mother had _______ sleep last night so she felt _______ sleepy today.
Mary asked her mother _____.
The _______ documentary describes _______ in the future.