42 Petronas Twin Towers is ..taller.   than Sears Tower (TALL)
 43 My sister is .older.. than my   (OLD)
44 Nam is .shorter..   than Ba.He is the ..shortest..  boy in Vietnam     (SHORT) 
45 Phanxipang is the .highest...  mountian in Vietnam ( HIGH)
46 These books are .thicker.. than those Books   (THICK)
47 It's the ..tallest.   building in this city.    (tall)
48 The Nile River is .longer..  than the Amazon River  (long)
49 My aunt has two..children.,one boy and one girl      (CHILD)
50 In th library we read about ..wonderful.. things  ( WONDER)

Không thể được. Sai đề ùi!!!!!!!!!!!!!!!!!!!!!!

21 Anna likes attending the English ....speaking...  contests      (SPEAK)
22 My neighborhood is ..famous....   for good and cheap restaurants  (FAME)
23 I like the city live because there are many kinds of ...entertainment..     (ENTERTAIN)
24 Van's classroom is on the ...second.   floor     (TWO)
25 these children like ..sunny...   weather (SUN)
26 Lan speaks English ..better...  than me    (WELL)
27 The Great Wall of China is the world's ..longest..   structure  (LONG)
28What's Maco's nationality..? - She is British.     ( NATION)
29 don't make a fire here.It's very ...dangerous...     (DANGER)
30 there are a lot of ..beautiful...  mountians in Vitenam    (BEAUTY)
31 This is the ...oldest.. pagoda in our country    (OLD)

b) Điểm gặp nhau cách A:
36 x 2 = 72 (km)
Đáp số: a) V_A: 36 km/h
                V_B: 45 km/h
            b) 72 km

1 she .teaches.  us english at school        TEACHER
2 In my neighborhood.., there is a park            NEIGHBOR
3 Bac Giang has a lot of .beautiful.. places     BEAUTI
4 what is the .highest.. of the mountian       HIGH
5 we often buy cheap bread in the .bakery..       BAKE
6 they have a lot of .activities..  in the summer        ACT
7 this is the....oldest. pagoda in Bac Giang      OLD
8 don't ride too quickly. It is ...dangerous...     DANGER
9 my house is ...bigger.   than your   BIG
10 he greets me in a..friendly.. way       FRIEND

a. Phong: Hello. My name's Phong.
    Nam: Nice ... to meet... you, Phong. I ..am. Nam.
              ..Are. you a .7a.. student?
   Phong: Yes. I'm in .class.. 7A.
   Nam: Oh, so ..great. ... .

b. Ba:    Hi, Nam
    Nam: Hi..., Ba. .Nice.. to .see.. you again.
             This is .my.. new classmate. .His.. name's Phong.
    Ba:    Nice ..to meet. ... you, ...Phong .
    Phong: Nice to meet you

24h                        

Bạn nhiều lúc làm sai Anh mà cũng được thầy tick , mà với ý kiến của bạn các thầy cô không onl thường xuyên mà chấm được đâu

Có các dung dịch riêng biệt không dán nhãn: NH₄Cl, AlCl₃, FeCl₃, (NH₄)₂SO₄. Dung dịch thuốc thử cần thiết để nhận biết các dung dịch trên là

A. NaHSO₄

B. BaCl₂.

C. NaOH.

D. Ba(OH)₂.