give up, stop doing something usually because it was too difficult, warm up, prepare the body before you exercise, keep up with, move at the same speed as someone else, join in, start doing an activity that has already started, take up, start to do something new, work out, do physical training, carry on, continue doing something, catch up, reach someone in front of you in a race, drop out, stop without finishing, sign up, register for an event

unit 4

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