B. EXERCISE:

I. Turn the following sentences into the passive voice

1. The children looked at the woman with a red hat.

2. The boys broke the window and took away some pictures.

3. People spend a lot of money on advertising every day.

4. A man I know told me about it.

5. Luckily, they didn't call my name.

Bài 3: a) So sánh các số sau 3²²² và 2³³³
b) Cho tỉ lệ thức \(\frac{x}{y}=\frac{2}{5}\) và \(3x^2+y^2=148\). Tính giá trị của \(5x^2+y^2\) ?

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