Choose the correct answer.
1.
I will let you know ______ I receive the report.
2. They waited for her for almost an hour. ______, she did not turn up.
3. ______ you never asked, how would I know you wanted the document?
4. I was busy doing my homework ______ my brothers were busy playing video games.
5. She takes her sister with her ______ she goes.
6. ______ you can show him the membership card, he will let you in.
7. They offered to do it for her ______ she declined their offer.
8. They were told to switch off all the lights ______ going to bed.
9.
The particles will ______ sink _______ float if you add more oil to the bottle.
10. We have to attend ______ Bali's wedding and June's when we go home next week.
11. ______ the principal's warning, we are afraid to leave school during class.
12. You may take driving lessons ______ you are able to pay for the lessons.
13. The hot weather is ______ the greenhouse effect. ______ the temperature has generally increased.
