Viết lại câu sau bằng nhiều cách nhất có thể: She couldn't solve these difficult exercise. (có thể dùng because, so...that, such...that, if, too, enough,...v.v......)
2 câu trả lời
She couldn't solve these exercises beacause they are difficult
These exercises are so difficult that she couldn't solve
These are such diffcult exercises that she couldn't solve
If these exercises were easy, she could solve it
These exercises are too difficult for her to solve
These exercises aren't easy enough for her to solve
⇒
She couldn't solve these exercises because it was difficult.
She couldn't solve these exercises because of its difficulty.
These exercises are too difficult for her to solve.
These are such difficult exercises that she couldn't solve.
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