31. Do you know when did the world _____?
| A．come into being | B．come | C．formed | D．Existed |
--- After school, let’s go to play football together.
--- OK.________.
A. that’s settled B. You are welcome C It’s up to you. D. After you.
I’ve got two tickets for tonight’s concert. I ___________ my little sister.
| A．take | B．have taken | C．am taking | D．took |
He doesn’t know the city very well, because this is the first time he _______ here.
| A．came | B．has been | C．come | D．am coming |
This machine _______. It hasn’t worked for years.
| A．didn’t work | B．wasn’t working | C．doesn’t work | D．isn’t working |
I would rather _____ a little earlier to avoid ________in the rush hour traffic.
| A．to start; catching | B．start; being caught |
| C．start; to be caught | D．starting; being caught |