用正确的形式填空(进来就选最佳,有原因更好)
1.Ourmathshomeworkisvery(easy).
2.Theyareworking(hard)tolearnhowtoswim.
3.Don'tgoneartheriver—itisn't(safe).
4.Lornacooks(bad).
5.He(quick)putthemoneybackinthebox.
6.Wealllistentotheteacher(careful)inclass.
7.Iwentintotheroom(quiet).
8.Myshoesarevery(cheap).
括号里的是原型