按规律填数字。(8分)
（1）one，two，three，four，
（2）one，three，five，seven，
（3）one，two，four，five，seven，
（4）ten，nine，eight，
__________lovely they are!
A. what B. What a C. How
The mother pig has three _________.
A. piglets B. puppies C. kittens
What are ___________over there?
A. that B. these C. those
The ducks and ducklings _______swim.
A. doing B. are C. can
How do you do？ --______________________?
A.How do you do? B. Thank you. C. I’m fine, thanks.