Can you come and give us a talk on Thursday or Friday?—I am afraid ______ day is possible. I am very busy these days.

I still remember the college and the teachers ________ I visited in London years ago.

I heard the old man won ______ yuan in the lottery. —Really？What a lucky man!

I think trees ____________ twice a week in such hot weather.—Yes, I agree. Or they may die without water.

Thank you for _____us so good ideas .