一、写出下列词的复数形式。
baby _____ potato _____ knife _____ photo _____ Chinese _____
strawberry _____key _____ watch _____ name _____ wish _____ Japanese _____ tomato _____dollar _____ orange _____
documentary _____ boy _____ piano _____ child _____
man _____ this _____ that _____ I _____ she _____