非洲的全程叫_________洲，是“阳光灼热”的意思，其东部有一条世界陆地上最长的裂谷带——_________。
阿非利加；东非大裂谷
用动词be的三种形式(is, am, are)填空。
1. It _________ a desk.
2. I _________ a girl. My name _________ Lucy.
3. What _________ your name?
4. What _________ this?
5. How old _________ you?
Look! The children _____ books.
[ ]
A. reads
B. read
C. is reading
D. are reading
