They thought __________ important to look right and left when ________ the road.
—What do you think of Mary’s dress? —I think it still looks quite fashionable on her _______ it is a style of many years ago.
— It’s cloudy now. I hope the clouds will _______ later on. — I hope so.
—He ______ be in the classroom, I think. —No, he ______ be in the classroom. I saw him go home a minute ago.
Although you may meet some difficulties, you should never.
— Why were they ______? — Because they saw something ______.