Your backpack is in the________ case.
| A．lost and found | B．found and lost | C．lose and found | D．find and lose |
— Kate! Let’s go to work right now. We’ll be late.
— _____. We still have 20 minutes left.
| A．Take it easy | B．Not at all | C．That’ s all right | D．You’re welcome |
She is often seen ______ the old woman.
| A．help | B．helping | C．to help | D．help to |
_____ this way, you can work out the math problem.
| A．Of | B．By | C．On | D．In |
All the information _____ writing the report.
| A．is used for | B．is used to | C．is used as | D．is used by |
The police found the lost car _____.
| A．by mistake | B．by accident | C．with mistake | D．in accident |