Boys, don’t lose____ in playing Angry Birds. It is bad for your eyes to play computer games for a long time

I found ______ not very difficult to keep away from the A/H1N1 Flu.

---Which colour do you prefer, red or pink?--- _________ . I really don’t mind.

You have more apples than ______ . But mine are better than _______.

Don’t copy others’ work. If you do it by ________, you’ll feel much better.