Question

Write each group of sentences as one sentence. Use (and) or (or) to join the predicates in each compound predicate. Add commas where needed.
1/ Architects discuss ideas. Architects draw plans. They work with owners.
Answer:
Architects discuss ideas,draw plans and work with owner.

2/ carpenters measure. Carpenters saw boards. Carpenters hammer nails .
Answer:
Carpenters measure, saw boards or hammer nails.

3/ plumbers connect pipes. Plumbers fix leaks. Plumbers install sinks .
Plumbers connect pipes,fix leaks and install sinks.

4/ painters patch holes. Painters paint walls.
-Painters patch holes and paint walls.

5/ On-line encyclopedias give information. On-line encyclopedias show pictures.
On-line encyclopededias give information and show pictures.

6/ libraries post book lists. Libraries send messages.
Answer: libraries post book lists and messages.

7/ You can bank on-line. You can listen to music. You can read the news.
You can bank on-line, listen to music or read the news.

8/ Students log on. Students reseach facts.Students write to open pals.
Answer: Students log on, research facts and write to pen pals.

9/ Computers save times . Computers are fun.
Answer: computers save time and fun.

Please: the answers true or false.

Answer 1

6. and send messages

9. and are fun,

Other than the above errors, your answers are correct.