1. provide aid

2. put out the forest fire.

3. were taking shelter

4. scattered debris

5. evacuate the village

1. provide aid

2. put out the forest fire

3. were taking shelter

4. scattered debris

5. evacuate the village

1. The prince just (turn) into a fog.      => has just turned                                                               2. They (get) married for 15 years.     => have gotten                                                                 

3 . My younger sisters already (meet) the princess.      => Have already met                             

4. They never (climb) Everest mountain.       => have never climbed

5. My classmates (repair) my bike for 30 minutes.        => have repaired                                      6. Anna already (eat) dinner.                  => has already eaten                          

7. She just (swim) in the swimming pool.          => has just swum                                                                              

8. Lily just (walk) with her friends in the park.         => has just walked                    

1. She (not learn) how to cook yet. => hasn't learnt

2. your cats (not come back) yet. => haven't come back

3. She (not write) any letters for him for 2 months. => hasn't written

4. I (not study) English for 10 years. => haven't studied

5. Andy and Anna (not make) friends for many years => haven't made

6. His wife ( not leave) for this company since 7 AM => hasn't left

7. Her husband ( not meet) for her for 2 years => hasn't met

1. you ever (sing) a Rock song? => Have you ever sung

2. he ever (forget) your birthday? => Has he ever forgotten

3. your friends (understand) yet? => Have your friends understood

5. How long you (practise) chess? => have you practised

6. In the past few years, she (wear) a lot of luxurious dresses. => has worn

 7. She (feel) sick recently ? => Has she felt

8. She (write) many letters so far ? => has she written

9. Your wife (live) in the US all her life? => has your wife lived

10. Until now, how many countries your parents (fly) to ? => have your parents flown

76. The boy's progress was so rapid that everybody was surprised./ The boy made such rapid progress that it surprised everybody.

78. The speaker's talk was so long that most of the audience felt sleepy./ The speaker gave such a long talk that most of the audience felt sleepy.

79. We watched such an exciting competition that we didn't want to go home./ The competition we watched was so exciting that we didn't want to go home.

80. It was such an excellent show that we all enjoyed it./ The show was so excellent that we all enjoyed it.

81. The weather was so hot that you could fry an egg on the side walk./ It was such hot weather that you could fry an egg on the side walk.

82. She talked so fast that I couldn't understand her./ She was such a fast speaker that I couldn't understand her.

do DE//BC => DE/BC = AD/AB <=> 3/7,5 = 2/(2+x)

=> 2+x = 5 => x = 3 

số số hạng = (9,9 - 1,1) / 0,2 + 1 = 45

=> Tổng A = ((9,9 + 1,1) x 45) /2 =247,5

a. PTHH: Mg + 2HCl → MgCl2 + H2

                 x               ->        x         x

                2Al + 6HCl → 2AlCl3 + 3H2

                 y               ->       y          3y/2

b. Mg chiếm 47.06% về khối lượng trong hỗn hợp X => Khối lượng của Mg trong hỗn hợp X là: 10,2 x 47,06% = 4,8 (g)

=> Khối lượng của Al trong hỗn hợp X là: 10,2 - 4,8 = 5,4 (g)

=> Số mol Mg là: 4,8/24 = 0,2 (mol)

      Số mol Al là: 5,4/27 = 0,2 (mol)

=> Tổng số mol khí thu được từ 2 PTHH trên là: 0,2 + 3/2 x 0,2 = 0,5 (mol)

=> Thể tích của khí thu được (ĐKTC) là: 0,5 x 22,4 = 11,2 (l)

c. Tổng khối lượng muối thu được sau phản ứng là:

0,2 x (24 + 35,5 x 2) + 0,2 x (27 + 35,5 x 3) = 45,7 (g)

Vì Minh cho Hòa 5 cái kẹo thì cả 2 bạn đều có số kẹo bằng nhau là 12 nên: 

số kẹo lúc đầu của Minh là: 12 + 5 = 17 (cái kẹo)

số kẹo lúc đầu của Hòa là: 12 - 5 = 7 (cái kẹo)

Đông Ti-mo, In-đô-nê-xi-a 

Các từ khác sai vì trong 1 từ có gạch nối thì không tự tiện viết hoa các chữ 

88. The classroom's chairs are so comfortable that the student find it easy to fall asleep./ The classroom has such comfortable chair that the student find it easy to fall asleep.

89. The tornado stuck with such great force that it lifted automobiles off the ground./ The tornado's force was so great that it lifted automobiles off the ground.

90. He was so worried about the exam that he couldn't get to sleep last night.