Choose the correct verb from the list and put it in the proper grammatical form, using each verb only once
carry out,  sell,  buy,  rehearse,  carry on,  walk,  repeat

1. I have been [ ] around for some time to have a bit of fresh air, and now my
   headache has let up a little.
2. The shop is making a lot of money because their T-shirts have been [ ] very
   well.
3. The customers at our café have been [ ] these veggie cakes in dozens, and
   we have made them slightly more expensive.
4. The rescue workers have been [ ] their operation despite severe weather
   conditions and unprecedented snow blizzard.
5. You can't blame me because I have been fulfilling the order and have been
   [ ] the instructions given to me.
6. The ballet soloist has been [ ] the dance recently and definitely needs some
   rest now before the performance.
7. The teacher has been [ ] the test five times, but with each new attempt, the
   results have been the same.