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play a part in play role in joins in take a part in
answer to answer to reply to reply to
reached were reaching have reached had reached
better easier worse happier
reached are reaching have reached had reached
reached were reaching have reached had reached
Did you answer Were you answering Do you answer Had you answered
asked questions in a regular way walked up and down when asking questions chose two or three questions for the students requested her students to finish their usual questions
reached are reaching have reached had reached
question questions problem problems
recite their homework together grade their homework themselves answer their homework questions orally check the answers to their homework questions
no possibility there was impossibility impossible it impossible
unanswered answered to answer answering
other another these those
ashamed of shameful for a shame shameful to