—I didn’t know this was a one-way street, officer.
—________.
A. That’s all right. B. I don’t believe you.
C. How can you say that? D. Sorry, but that’s no excuse.
It seems that living green is __________ easy and affordable. A small step makes a big difference.
A. exactly B. fortunately C. surprisingly D. hardly
It was in the small house _____was built with stones by his father ____he spent his childhood.
A. which; that B. that; where C. which; which D. that; which
__________ environmental damage is done, it takes many years for the ecosystem(��̬ϵͳ) to recover.
A. Even if B. If only C. While D. Once
I like this jacket better than that one, but it costs almost three times______.
A. as much B. as many C. so much D. so many
Only when I left my parents for Italy __________how much I loved them.
A. I realized B. I had realized C. had I realized D. did I realize
