–Where ______ my pens? –      on the table. 

I think          important for us to learn a foreign language well.　　

---Excuse me, I want to buy some food. Where can I find a supermarket？ ---I know ________ not far from here. You can easily find ________.

 I can’t find my ticket. I think I must have lost_____.

Wearing red can make ______ easier for us to take action.