根据要求完成句子。
1. school / for / lessons / to / she / her / didn’t / go (.) ( 连词成句 )
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2. They went to visit Shanghai World Expro. ( 对画线部分提问 )
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3. I bought two storybooks. ( 改为否定句 )
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4. She took a trip with her parents. ( 改为一般疑问句 )
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5. Did you see your grandparents last weekend? ( 做否定回答 )
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Does Li Ming have a surprise Danny? (   )

A．for

B．to

—Are there any boats in the lake? (   )
—Yes, _______.

A．there is

B．there are

C．No, there isn't

---Are the keys in the door? ( )
---Yes, __________.

A．they aren't

B．it isn't

C．they are

________ you ________ the flag on Flag Day? (  )

A．Do; fly

B．Are; flying

C．Are; fly