_______ is certain that practice makes perfect.
Mostofhistime _____inreadingnovels.
Mostofthemistakes____becauseofcarelessness.
Theboysittingbythewindowistheonlyoneofthestudentswho _______fromthecountrysideinourschool.
Thestudentsinourschooleach_________anEnglishdictionary.
Thepairofshoes__________wornout.