Apple’s i Phones _____easy to learn. Many young people can use them well. 

---Don’t          too late, or you will feel tired in class tomorrow.---I won’t, Mom. Good night!

- Another good idea! And we could each call up ten people and ask them to come.- Hey, we’re ______ a lot of good ideas, aren’t we?

Trainers are comfortable __________.

— Excuse me, may I borrow your Chinese-English dictionary?— OK, here you are. But you can           it for only two days．