用适当的介词填空1.What will you do when you meet a foreigner ____ th
用适当的介词填空
1.What will you do when you meet a foreigner ____ the frist time?
2.I don't like drinking tea ____ milk.
3.Don't read books ____ buses.It's bad for your eyes.
4.Children had a good time ____ the party last night.
5.The young people should speak ____ older people politely.