Sure, here are the sentences completed by matching them with the appropriate endings:

1. Books help us to learn **c. because we can read and learn new vocabulary.**
2. We can read books anywhere **d. because they do not need batteries or make any noise.**
3. Reading books is good for our imaginations **a. because there are lots of new ideas.**
4. People who read books are usually intelligent **b. because they learn a lot of information from books.**