问题
填空题
用适当的词填空。
1. Mrs Li arrives __________ Beijing at 2: 00 in the afternoon.
2. Thank you __________ your gifts.
3. __________ the girl speak Chinese? Yes, she does.
4. What do you do __________ Sundays?
答案
1. in 2. for 3. Does 4. on
，若A∩B=B，求实数m的值。