1) .........preparing..... for the Lunar New Year begin weeks before the festival. (prepare)

2) each ethnic minority people has its own .....typing..... features (type)

3) thank you for your .....participating........ Your presence at our party is such a great honor for us (participate)

 I.COMPLETE THE SENTENCES USING THE GIVEN WORDS

1. If you have an ___e-book reader____, you don't have to bring all those heavy books in your bag.  

2. Can I use a ______correction pen_____ to cover errors in my writing?  

3. A normal printer is more ____economical_______ than a 3-D printer.  4. You should use this pair of _____earbuds__________, others won't be able to hear it.  5. A ______digital camera_________ allows us to view and edit photos easily.  6. Don't worry. This is a ____handheld_ _____, so it's quite small and light.  

1. I have learnt how => how to swim since 2010.

2. She has worked for this bank since she leaves => left university.

3. What => how sweet voice you have!

4. I go to the school library to borrow books twice => bỏ.

5. Could => can you tell me the way to the post office?

6. I received a letter to => from my friend last week.

7. I have gone => been to Singapore three times.

8. My brother can't swim, so => because he is afraid of water.

9. Don't eat toomuch salt because it is not good to => for you.

2. Veronnica looks    (look) out of the window

3. She  is talking    (talk) to someone on the mobile

4. The baby   sits   (sit) on the floor

5. The baby   eats    (eat) the flowers

6. Ronald  has     (have) a cup of tea

7. He   watches     (watch) the television

8. The two older children  do     (do) their homework

1. Where is your mother? – She is in the kitchen. She __is cooking____(cook) the dinner.

2. did Your brother often __go____ (go) to school by bus last year?

3. He often played football when he (be).......was..............young.

4. Trung is learning to play the guitar. He (have)....has...............guitar lessons twice a week.

5. Look! The plane (fly)............is flying................ toward to the airport. It (land)...........is landing...............

The robot    is cleaned      (clean) the living room

II.Choose the words or phrases that need correction.

1.How much => many books are there on the shelf ?

            A                  B              C        D

2.Although => despite his old age, Mark performed excellently in his latest film.

    A                   B                                        C                         D

3.Almost people were shocked by the wav the film star behaved. => behaving

        A                          B                      C                           D

\(D=\dfrac{m}{V}\Rightarrow m=D.V=6.800.0,4=1920kg\)

\(t_2=\dfrac{S_2}{v_2}=\dfrac{1,8}{10,8}=\dfrac{1}{6}h\)

\(\Rightarrow v_{tb}=\dfrac{S_1+S_2}{t_1+t_2}=\dfrac{3+1,8}{0,5+\dfrac{1}{6}}=7,2\) km/h

\(n_{CO_2}=\dfrac{16,8}{22,4}=0,75mol\)  

\(n_{H_2O}=\dfrac{13,5}{18}=0,75mol\)

\(n_A=\dfrac{5,6}{22,4}=0,25mol\)

Gọi CT: \(C_xH_y\)

\(x=\dfrac{0,75}{0,25}=3\)

\(y=\dfrac{2.0,75}{0,25}=6\)

=> \(C_3H_6\)