1 The guard asked the passengers to back away/ down from the edge of the train platform. 2 The school carried on/out a fire safety drill. 3 Despite his accident, he carried on/out climbing. 4 Back up/out your computer files regularly. 5 The match was called off/back due to heavy rain. 6 She backed down/out of the race in the end.
1 The guard asked the passengers to back away from the edge of the train platform.
2 The school carried out a fire safety drill.
3 Despite his accident, he carried on climbing.
4 Back up your computer files regularly.
5 The match was called off due to heavy rain.
6 She backed out of the race in the end.