_________to see us, theprofessor gave us a warm welcome.

Will you stay for dinner?— Sorry, I _____. My sister is coming to see me. [ ]

填入下面一段文字横线处的语句，最恰当的一项是某一地区特定时间内游客数量超过其接待能力，是造成该地区旅游业出现种种问题的重要原因。若不提高其接待能力，再美丽的湖光山色也会暗淡无光， ，再动人的微笑服务也会丧失魅力。

Why not swim in this river— My father told me here. It’s dangerous.

Muchashelikedthebook,____hedidn’thaveenoughmoneytobuyit．