chứng minh rằng nếu a là 1 số nguyên thì ( 2a + 1 ) ^2 - 1 chia hết cho 8 ko còn dư

Complete these sentences with one of these two tenses, "Past simple or Past continuous"

I__________(watch) TV when my wife called me.

When she ___________(look) up, i realized that she was crying.

I immediately_________(think) that something terrible had happend.

Actually, a mouse _________(run) in the kitchen.

I___________(open) the door and it left.

It was late and my son __________(sleep).

I_______(switch) off the light in his bedroom, but he __________(hear) me and he woke up.

So, i ________(decide) to read a story but while i __________(read), i realized that he had fallen asleep again.

Choose the word (A, B, C, or D) which has the stress pattern different from that of the other words

1 A comprise B correspond C complusory D depend

2 A collection B admire C blanket D exchange

3 A economic B pagoda C material D relax

4 A champagne B encourage C embroider D logical

5 A minority B intermediate Coccasion D embrodier

Nếu cạnh hình vuông tăng thêm 50% thì diện tích sẽ tăng thêm

50 x 2 + 50 : 2 ( % )  = 125%

đ/s: 125%

đúng 100%