Rewrite the sentences.按要求改写下列句子
1. I have some watermelon juice. (对划线部分提问)
What ________ you ________?
2. They are oranges. (改为单数句)
It is ________________.
3. These are grapes. They are purple. (合并成一句)
These are________________.
4. What do you like drinking? (根据实际情况回答)
I like ________________.
5. The chocolate is sweet. (对划线部分提问)
How ________ the chocolate ________?