【C10】A．rolesB．pitchesC．opportunitiesD．parts

【C10】A．ByB．InC．ThroughD．With

【C10】A．stillB．alreadyC．tooD．yet

【C10】A．occasionsB．opportunitiesC．circumstancesD．schedules

【C10】A．theirB．theC．thoseD．these

【C10】A．onB．inC．atD．from

【C10】A．isB．areC．hadD．／