Edisontestedmorethanonethousandmaterialstoseeiftheycould_____electric;currentandglow.

Thedetailedanalysesofthirdandfourthquartersalesareincludedin___finalreport

Hewassaid_____agiftfromher,knowingthatitmeantabribe.

Youshouldnothavedriventhatcarwithitsbrakesoutoforder.You_____aserious

Thelittlegirlisignorant_____thebasicrulesofEnglishgrammar。