I __we__we__本身是复数了,还有么?__him _____them____this ____these___her ___them___
watch ___watches____child ___children____photo __photos______diary ___diaries___
day____days____ foot____feet____ book___books____ dress ___dresses_____
tooth____teeth___ sheep __sheep____box____boxes___ strawberry __strawberries___
thief ___thieves____yo-yo ___yo-yos___ peach___peaches___ sandwich __sandwiches____
man___men___ woman__women_____ paper___不可数____juice______不可数_____
water_____不可数___ milk__不可数______ rice_____不可数_____ tea__不可数________