$1$. or

$2$. yet

$3$. however

$4$. and

$5$. for

$6$. therefore

$7$. because

$8$. but

$9$. so

$10$. moreover

1. Are you applying for graduate school? or will you look for a job?

2. The cost of installation is very high, yet solar domestic heating systems are economical to use.

3. We started our journey early; however, we reached the nearest village before sunset.

4. Nam has applied for the scholarship and Mai has requested financial aid.

5. We store two essays last week for two essays we have to write this week.

6. Foreign students must be able to communicate easily in speaking and writing, therefore, they must take English classes.

7. People should use more solar energy because it is cheap, clean, and unlimited.

8. I understand your point of view but I don't agree with it.

9. My father is on holiday so he is unable to attend the meeting.

10. I know this painting is a forgery, moreover, I know who painted it.