A．watchedB．producedC．learntD．heard

How many shoes ___ this year？A、have been producedB、were producedC、produced

回答（56）题 查看材料A.watcheDB.produceDC.learntD.heard

【C17】A．designedB．producedC．createdD．conducted

【C3】A．watchedB．examinedC．viewedD．expected

【C7】A．watchedB．followedC．inspectedD．traced

【C2】A．watchedB．relatedC．wroteD．observed