— How far is it from Tianjin to Changsha？
— It is a _______ flight from Tianjin to Changsha.
| A．2-hour-long | B．2-hours-long |
| C．2 hours’ long | D．2 hour long |
Don’t waste your time in your holiday. Try to find _______ useful to do.
| A．somebody | B．somewhere | C．something | D．someone |
As the _______ grows larger, the world itself seems to be smaller.
| A．population | B．pollution | C．problem | D．province |
--- Will Jim go hiking with us this weekend?
--- Maybe not. He _______ to visit his grandpa in the country.
| A．will decide | B．decides | C．has decided | D．decided |
There’s still an hour left, you _____ go in a hurry.
| A．must | B．needn’t | C．can | D．mustn’t |
---Have you seen Bill recently?
--- Oh, no! Nobody knows ______ he is! Everyone is looking for him.
| A．where | B．what | C．who | D．how |