________ he ________ anything about this historic site— Yes. That’s why he suddenly becomes so obsessed with it.

I’d like to invite you to my home ________your warm hospitality（款待）.

The number of students in our school ________about 30,000 and ________them study hard.

Soon, his warm, inviting smile put me _____, and we spent the next two hours talking casually[ ]

Would you like ________ basketball —Yes, I’d love to.