(2013·安徽卷)From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
— Your windows are still open? It’s so cold! — Oh, sorry. They_______ .
We believe the time and hard work _______ in completing such an important project are worthwhile.
— Are you in favour of Tom’s suggestion_______ we work around the clock to meet the deadline? — No. But ______ Jimmy suggested to me sounds practical.
We attend lectures in the school meeting room at weekend _______ seats more than 800 students.
How can you expect to get ahead in your life _______you even live to yourself from time to time?