The Yellow river is the second ______ river in China.
| A．long | B．longer |
| C．longest | D．the longest |
If you want to keep _______, You _______ do more exercise and eat less.
| A．health; shall | B．healthy; shall | C．health; should | D．healthy; should |
---Who left the window _______?
--- Sorry. I forgot _______it when I left yesterday.
| A．opened; to close | B．open; to close | C．open; closing | D．opening; closing |
They _______ the train until it disappeared in the distance.
| A．saw | B．watched | C．noticed | D．realized |
---Hi, Kate. You look tired. What’s the matter? --- I _______well last night.
| A．wasn’t | B．don’t sleep | C．haven’t slept | D．didn’t sleep |
--- _______did it _______ the conductor to check the tickets this morning?
--- Half an hour.
| A．How soon; take | B．How long; cost |
| C．How often; spent | D．How long; take |