答案、一、1.sign 2.middle 3.special 4.path 5.may 6.lost 7.worry 8.follow 二、1. What does it mean? It means' dangerous'!
2. can I go in? No, you can't. You must stay away from the building.
3. Mr. Smith is walking in the park
4. Is a $10 bill.
5. Didn't you see the sign over there? What does it say "please don't close to the lawn. Fine
ten dollars." 三、1.sign 改成 signs 2.that 改成 it
3.are 改成 is
4.quietly 改成 quite
5.at |