Use the given words to make sentences. (Thêm từ vào cho câu có nghĩa)

28. She / like / learn English/./

29. She / always / want / improve her English/./

Give the correct form of the verbs in the brackets

1. She likes .................. at home.(stay)

2. I ...................... him since yesterday afternoon.(not see)

3. Children outgh to ......................... the street carefully.(cross)

4. The sun never .................. in the west.(rise)

5. Linh asked some boys ...................... soccer in the school yard.(not/play)

Khẳng định nào sau đây là đúng

a) (x - y)^3 = x^3 - y^3

b) x^3 +1 = (x + 1) (x^2 - x + 1)

c) (x + 2)^2 = x^2 + 4

d) x^3 - 1 = (x - 1) (x^2 + 2x + 1)