问题
填空题
在TCP／IP协议簇中，___________是主要的第三层协议。
答案
参考答案：IP
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在TCP／IP协议簇中，___________是主要的第三层协议。
参考答案：IP
下列句子均有一处错误，把正确答案写在题后的横线上（保持句子意思不变）。
| 1. There are four peoples in my family. | |
| 2. Are those your friend? | |
| 3. That is his father friend. | |
| 4. This isn't her bag. It's I bag. | |
| 5. -What are these? | |
| -These are apples. | |
| 6. Are they your grandparent? | |
| 7. -Dad, he is my friend, Tom. |
-Hello, Tom
8. Excuse me, is that yours watch?
9. Mr Green is Jim father.
10. What's a name of his cat?