---__________. --- -Y-E-L-L-O-W.
| A．Please spell it. | B．How are you? |
| C．What color is it? | D．What's this? |
At the top of the high mountains, there is very _____ oxygen in the air.
| A．a little | B．little | C．a few | D．few |
Thank you for __________ me to you party.
| A．invite | B．inviting | C．invitation | D．invited |
Could you tell me _____?
| A．where does he live | B．where lives he | C．where he lives | D．he lives where |
Don’t hurry. There are twenty minutes left. It’s _____ for us to get to the cinema.
| A．enough early | B．early enough | C．enough quickly | D．quickly enough |
He _____ there _____ his father came.
| A．didn’t wait…till | B．left…till | C．waited…until | D．waited…after |