As the famous saying _______, two heads are better than one.
| A．mentions | B．goes | C．tells | D．instructs |
The visitors saw rows of houses the roofs _______are red.
| A．where | B．that | C．what | D．of which |
As is known to all, China _______the group of developing countries.
| A．belonging to | B．was belonged to | C．belongs to | D．is belonged to |
There is no doubt _______international cooperation is the key to dealing with cyber crime.
| A．then | B．that | C． wheather | D．this |
---They are quiet，aren’t they?
---Yes. They are accustomed ________at meals.
| A．to talk | B．to not talk | C．to talking | D．to not talking |
He risked __________ his job to see me off.
| A．Losing | B．to risk | C．being lost | D．Lost |