i don't have much homework ( )《do》.2,east of the river （ ）《lie》two buildings.3,i‘m right,（ ）《be》i?4,i can't help （ ）《do》housework at home bacause i am busy with my homework.
问题描述：
i don't have much homework ( )《do》.
2,east of the river （ ）《lie》two buildings.
3,i‘m right,（ ）《be》i?
4,i can't help （ ）《do》housework at home bacause i am busy with my homework.
答
i don't have much homework ( to do )《do》.
2，east of the river （ lying ）《lie》two buildings。
3，i‘m right，（ isn't）《be》i？
4，i can't help （ to do ）《do》housework at home bacause i am busy with my homework。
答
to do
lying
am't
doing