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.
Do you often borrow books ________the library?
A.in B. from C. at