一、用所给词的适当形式填空。
1. Let's (draw) a cute duck.
2. What are (this) here?
3. These are some (apple tree).
4. Here are some trees. Can you draw (they)?
5. It's difficult, but she can (try).

1. draw 解析：Let's 后接动词原形。
2. these 3. apple trees
4. them 解析：动词后面的代词用宾格。
5. try 解析：情态动词后用动词原形。