Sam’s cousin ______ a programmer. But he changed his job last month.
| A．has been | B．is going to be |
| C．is | D．used to be |
We didn’t go to the concert because we couldn’t to buy the tickets to it.
| A．choose | B．expect | C．offer | D．Afford |
English is used an official language in more than 70 countries.
| A．as | B．for | C．with | D．By |
helps build a better world for everyone, especially children around the world.
| A．ORBIS | B．UNICEF | C．OXFAM | D．WWF |
—People have realized how important the environment is, but still trees ____in the world every year.
— We must do something to stop it.
| A．were cut down | B．cut down |
| C．are cut down | D．will be cut down |
Do you know _____?
| A．where is he from | B．who is he |
| C．how old is he | D．how much the jeans are |