:I. 单项选择（共20小题：每小题1分，满分20分)
1. Faced with such a heavy snow, I had no alternative but _______ at home watching TV.
A.stay B.staying C.to stay D.stayed
2.The chickens will provide us___feathers,___we can make the most for cleaning the table and benches.
A.with; with B.with; of which C.of; which D.of; from which
3．—Can I come to ask for some advice at any time? — Yes, of course. _______
A.If you’re convenient. B.Don’t mention it.
C.Don’t worry. D.At your convenience.
