1.How often do you come ...to.... visit your uncle and aunt?

2. I ...stayed up late.... last night , so I can't get up early this morning

3. Why are Science lessons interesting .....to..... her

4. My classmates often help each other .....with..... their homework

I told them not to cross the park at night. -> I warned them not to cross the park at night.

Gọi chiều rộng là x,chiều dài là y.

Vì x và y tỉ lệ vs 3 và 5

=>x/y=3/5=>x/3=y/5

=>y-x/5-3=4.5=>x=13.5;y=22.5=>S chữ nhật là 13.5#22.5=303.75m'2

Ta có: \(\overline{aaa}\) = 111.a (a < 10)

mà 111 ⋮ 37 nên 111.a ⋮ 37

Vậy \(\overline{aaa}\) ⋮ 37

Ta có: \(\overline{aaaaaa}\) = 111111.a (a < 10)

mà 111111 ⋮ 37 nên 111111.a ⋮ 37

Vậy \(\overline{aaaaaa}\) ⋮ 37