Make good preparations for your self-driving trip ______ you’ll regret it when your car breaks down in a remote area.
| A．and | B．so | C．but | D．or |
We work together to achieve our common purpose： ______ world that is safer, cleaner and healthier than______ one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |
At the United Nations Climate Change Conference, the UN Secretary General points out that, ______, the climate situation will get worse and worse.
| A．if not dealing with properly | B．unless dealing with properly |
| C．if properly dealt with | D．unless properly dealt with |
---Tom was late for class this morning again.
---You know, _______.
| A．all good things come to an end | B．a leopard cannot change its spots |
| C．honesty is never too much practical | D．a work ill done must be twice done |
You didn’t take his advice. ____ his advice, you _____ such a mistake.
| A．Had you taken; wouldn’t have made | B．If you had taken; would make |
| C．Were you to take; shouldn’t have made | D．Have you taken; won’t have made |
In our childhood, we were often ____ by Grandma to pay attention to our table manners.
| A．demanded | B．reminded | C．allowed | D．hoped |