Question

[Nguyễn công minh]

This math exercise is too difficult for her to do.
--> This math exercise is not

My silk dress is red and beautiful.
--> I have

She plans to buy another motorbike.
→ She is

Paul did his homework alone.
--> Paul did

Answer 1

[Đỗ Thanh Hải]

This math exercise is too difficult for her to do.
--> This math exercise is not easy enough for her to do

My silk dress is red and beautiful.
--> I have a beautiful red silk dress

She plans to buy another motorbike.
→ She is going to buy another motorbike.

Paul did his homework alone.
--> Paul did his homework himself