【Completeeachofthefollowingsentenceswiththecorrectformofthewordsgivenbelow.1,Ilostmykeysandcouldnot___thedoor.(lock)2,Marywasalreadyan______-primaryschoolteacherattheageof25.(experience)3,Theirliveswerefrequently___】

　　Completeeachofthefollowingsentenceswiththecorrectformofthewordsgivenbelow.

　　1,Ilostmykeysandcouldnot___thedoor.(lock)

　　2,Marywasalreadyan______-primaryschoolteacherattheageof25.(experience)

　　3,Theirliveswerefrequently______bygasexplosion.(threat)

　　4,ThefirstAmerican______ofthisoperawasin1926.(perform)

　　5,Theboyis______tohavehadthehelpandguidanceofsuchalearneduncle.(fortune)

　　6,Youwillincreaseyour______ifyouintroducemoresystemintoyourwork.(efficient)

　　7,Ifyouusethischemicaltocleanyourshirt,thestainswill______immediately.(appear)

　　8,JohnandMaryhada______,buttheyhavemadeitupnow.(understand)

　　9,Thechildrenlookedwonderfully______withtheirbrighteyesandglowingcheeks.(health)

　　10,Lookingup,Isawhiseyesfixedonmein______.(curious)