It turned out that one of the children I thought a girl was _______ a boy.

He had planned to make a compromise, but ______ he changed his mind at the last minute.

The special dance，Gangnam Style，is ________ popular all over the world and was even performed in the White House.

I woke up with      bad headache, yet by      evening the pain had gone.

—Do you think an advertisement is a help when you look for a job?—Well，it depends.________，it gives me a chance to try.