A: Mom and her sisters have decided to go on a trip together
for B it should be: His uncles and my brother were going on a camping trip
for C: the wording is just funky.
for D it should be: Both Natalia and Mike have invited us over
Hopefully this helps and good luck.
Answer:
aeroplanes beacuse they can get you to different countries
Explanation:
Oh um can you please add on to that what do you mean