*______ on your headset.
Put. We put on headsets. We put things on our bodies, like put on a shirt or put on some shoes.
*I wonder if you could _____ me a favour and carry this box for me.
Do. We do favors for others.
*Joanna _____ her new mobile phone.
a. (is losing)
d. has lost
This is a poor question. They probably wanted "has lost" as the answer, but you could also use "loses" or "is losing" grammatically.
What happens when Joanna gets drunk? Joanna loses her new mobile phone.
Why is Joanna so sad? Cause her dad is reducing her allowance because her grades were bad. She is losing her new mobile phone.
The others are correct.
Student or Learner