Chia động từ :

1) She (go) to school at 6:30 everyday

2) He (learn) english since 1992 . He is doing his homework in the living room

3) Five years ago, he(live) in the country with his parents

4) She (work) in her garden with her brother

5) My friend (see) her yet

6) He was walking along the street when we ( see) him

7) Look ! The train (come)

8) The birds (fly) away when the winter (come)

9) At four o'clock yesterday afternoon, she (study)

10) You (not tidy) this room for weeks

11) Listen to these foreigners. What language they (speak) ?

12) He (study) English for 5 years

13) I (meet) her at the party last week

Cho 2 hình vuông ABCD và BMNP có cùng đỉnh B và nằm ngoài nhau . Trên tia AB xác định điểm C' sao cho AB = BC'

a) So sánh các tam giác ABP và BMC ; tam giác CBP và C'BM

Gọi BI và BS lần lượt là trung tuyến của tam giác CBP và tam giác C'BM . Chứng minh : BI=BC

b) Chứng minh : BI vuông góc với BS

combine these sentences, using so ......that or such ...... that: (Ghi 2 cách so that & such that)

1) The football match was very boring . We left the stadium after the first half .

2) The ticket was very expensive . We had to stay at home to watch TV

3) The water is very polluted . Fish can't live in it

4) Minh spoke very fast . We couldn't hear anything

5) The river is very deep . We can'[t swim across it

6) The book are very interesting . He bought all of them

7) The teacher is very good . All student love him

8) The coffee is hot . I can't drink it

combine these sentences, using so ......that or such ...... that: (Ghi 2 cách so that & such that)

1) The football match was very boring . We left the stadium after the first half .

2) The ticket was very expensive . We had to stay at home to watch TV

3) The water is very polluted . Fish can't live in it

4) Minh spoke very fast . We couldn't hear anything

5) The river is very deep . We can'[t swim across it

6) The book are very interesting . He bought all of them

7) The teacher is very good . All student love him

8) The coffee is hot . I can drink it

{ 3a²x² . [ ax (4a - 5x) +7ax ] + a²x³ [ 15(a + x) -21 ]} : 9a³x³

{ 3a²x² . [ ax (4a - 5x) +7ax ] + a²x³ [ 15(a + x) -21 ]} : 9a³x³