Complete the sentences with the present perfect progressive form of the verbs and for or since. 1. Jimmy Woodward ______(take) computers apart _______he was five years old. 2. Caitlyn ______ (play) chess _______ she was very young. 3. Serena _____ (study) martial arts _______ she started school. 4. I _____ (collect) baseball cards ______ two years.