This blue pen is .
John wants to be a, so he often helps sick people in the hospital.
Some students in Shanghaie-bags for several months.
May I have a talk with you, sir? I've gotimportant to tell you.
-I really hope to get in touch with Tony.[ -Sorry, I don’t know ___________.
We can do a lot to stay healthy. __________, we should eat a balanced(平衡的) diet.