The tiger is now in danger of disappearing. So more attention ____ to protecting the tiger.
| A．paid | B．must pay |
| C．was paid | D．must be paid |
I bought two teddy bears. One is for my sister, ________ is for my friend Tom.
| A．the another | B．the other | C．others | D．another |
Let me _________ it.
| A．does | B．to do | C．doing | D．do |
I’m thirsty. I want to buy something _________.
| A．to drink | B．drink | C．drinking | D．for drink |
Hurry up, _______ you can’t catch the first train.
| A．and | B．but | C．or | D．so |
Every day we should keep our classroom _________ .
| A．cleaning | B．to clean | C．clean | D．cleans |