Complete the sentences with the correct form of the words in the box
Ex2. Complete the sentences with the correct form of the words in the box.
error | progress | discomfort | take off | medical
1. The scientists have made a(n) __________ breakthrough with their discovery.
2. The procedure is not painful, but you will experience some mild __________.
3. The engineer realized that there was a mathematical __________ in his calculation.
4. We were told to be quiet as examinations were in __________ in the building.