The driver was still________what had happened when he was sent to hospital, but after a while he lost________.
She told us what she bought yesterday ________ a few apples and some clothing.
Do you know that Yuan Longping is known as ______ father of hybrid rice (杂交水稻)?
He didn’t come to school yesterday _______ that he was ill.
It was _________ that everyone like to read it.
It was ______ 7:30 that he _________ home yesterday, so his parents were very worried.