【seniorhighschoolEnglish1.什么情况用have什么情况用havebeen?alotoffactories____havebeensetup对havesetup错setup好像是点动词词组吧.怎能用been?2.theirdutyisto__theircountryagainstforeignenemies'sattacks.Adef】

　　seniorhighschoolEnglish

　　1.什么情况用have什么情况用havebeen?

　　alotoffactories____

　　havebeensetup对havesetup错

　　setup好像是点动词词组吧.怎能用been?

　　2.theirdutyisto__theircountryagainstforeignenemies'sattacks.

　　AdefeatBdefend咋选B

　　3.Coalwasformedoutofdeadforestsbychemical__.

　　AprocessesBproduct咋选A