In the following question, four sentences are given out of which three sentences are grammatically incorrect while one is correct. Find out which sentence is grammatically correct and select the appropriate option.
1
The government did not knew when the borders would be reopened.
2
Until there is a vaccine, nothing will be the way it was before.
3
It is very important that we continue to following health recommendations.
4
Gatherings will have to have limitations on maintain an adequate safety distance.