You won’t succeed __ you work hard.
Scientists have created GM tomatoes which ______ fresh for 45 days, three times as long as normal tomatoes.
It is not until we know more about the situation ______ we are able to improve it.
— I hear that Mary is ______ to stay with us for a few days. —That’s great.
It was between 1830 and 1835 ______ the modern newspaper was born.A how B that C which D because
—I’m sorry to say this, but the room here is very dirty.—______. I will ask someone to clean it right way.