六、写出下列字母组合对应的大写或小写形式。
1. MBA ______
2. DIY ______
3. green ______
4. just ______
5. UFO ______
6. brother ______

1. — (Thanks / Hello), Dad.
—You're (good / welcome).
2. This is my (sister / brother). She is (five / six).
3. — (What / How) is your (old / name)?
—I'm Liu Tao.
4. I can (take / draw) a picture for my family. I (love / have) them.