1) You(must / can) drive carefully near the crossing. 2) The water(was able to / couldn’t) be cold. It has been very hot
these days.
3) The elephants(mustn’t / are not able to) stand the mice.
4) My Granny(could / mustn’t) speak several languages.
5) People(mustn’t / are not able to) litter in the city.
1) must
2) couldn't
3) are not able to
4) could
5) mustn't
1) must
2) couldn't
3) are not able to
4) could
5) mustn't