谁可以告诉我！

1.open
2.dancing,singing
3.jumping(like doing sth表达经常的爱好,like to do 表示一时的爱好,所以用like doing)
4.ugly
5.school buses(这种情况只需在后面加上复数即可)

补充的:
libraries
sheep,lorries(sheep是单复数同行,所以不变)
drawing,painting(表示正在做什么,用现在进行时)
policemen,ploicewomen
postmen(这两者的复数都是把man改成men,而不是在man后加s)

1.open
2.dancing,singing
3.jumping
4.ugly
5.school buses
6.libraries
7.sheep,lorries
8.drawing,painting
9.policemen,policewomen
10.postmen

open
dancing,singing
jumping
ugly
school buses
libraries
sheep lorrys
drawer paiontor
policeman policewoman
postmen

⒈oper
⒉dancing singing
⒊jumping
⒋ugly
⒌school buses

⒈libraries
⒉sheep lorries
⒊drawing,painting
⒋policemen,ploicewomen
⒌postmen
好多 终于做好了 你看看吧 对不对