The chairman’s speech ______ the radio when I turned it on.
| A．was broadcast on | B．was being broadcast on |
| C．was broadcasting in | D．broadcast over |
The lack of eco-friendly habits among the public is thought to be a major ____ of global climate change.
| A．result | B．cause | C．warning | D．reflection |
Arriving home，the boy told his parents about all the________which occurred in his dormitory.
| A．occasions | B．incidents | C．matters | D．accidents |
There’s a _____ in our office that when it’s somebody’s birthday, they bring in a cake for us all to share.
| A．tradition | B．balance | C．concern | D．relationship |
We have various summer camps for your holidays, You can choose ____ based on your own interests.
| A．either | B．each | C．one | D．it |
—Would you like tea or coffee?
—, thank you. I’ve just had some water.
| A．Either | B．Both | C．Any | D．Neither |