VCT nhập vào 2 số nguyên A và B (A<=B) tính tổng các số chia hết cho 3 từ A đến B

Chạy mô phỏng đoạn Chương trình sau và cho biết s,a,b? Đoạn chương trình thực hiện bao nhiêu vòng lặp ?

a:=5; b:=10;

While a<>b do

Begin 

             if a<b then b:=b-a;

             if a>b then a:=a-b;

End;

Choose the best answers among a,b,c or d that best completes each sentence

1)John is interested ........... the history of VietNam

a.on            b.with                 c.to                     d.in

2)Tom will go to ............because he wants to visit the Oceanic Institute

a.Nha Trang           b.HaNoi          c.Sapa           d.DaLat

3)He.............here since 2016

a.work                b.has worked           c.works               d.worked

4) Drink cans are brought back to the factory for ..............

a.Recucling           b.Recycled               c.to recycle             d.recycle

5)Lan tries her best .................pass the exam.

a.in order to                  b.in order                  c.so as              d.as to

6) It's too hot. Would you mind ........the window?

a.open                b.opened            c.opening               d.to open

7) We can ....... things like envelopes, glass,plastic bottle and old plastic bags.

a. recycle             b.reduce            c.reuse                    d.remember

8)The house..............every year

a.is painted               b.painted             c.pains             d.Painting

9) I............some rice on the fool of the chicken coop

a.scattered                b.grew           c.threw away             d.raised

Choose the best answers among a,b,c or d that best completes each sentence

1) When I came home at 7.30 last night, my mother ...... dinner

a.cooked                    b.is cooking              c.was cooking                  d. cooks

2)Chicago is often ...................."The Windy City"

a.said                b.called               c.told                      d.spoken

3)While Mr.Ba ............... the little boy a story, he ...............

a,read/fall                b.was reading/fell                  c.was read/fell              d.was reading/fell

4)She promises she......... back in about half hour

a.is            b.be              c.will be                         d.has been

5) People use first-aid...............ease the victim's pain and anxiety

a.so that            b.in order to               c.so as not to           d.in order that

6) The girl................to Miss Hoa is Lan

a.talk                      b.talks                 c.talking           d.talked

7) Mr.Quang is a careful worker. He always works ..............

a.carefully                 b.careful                c.care            d.careless

Choose the word whose underlined part is pronounced differently from the others 

1) a.sky           b.Why             c.busy            d.by

2) a. mountin            b.around        c.south           d.four

3) a.hot                 b.hold           c.home            d.hour

4)a. correct            b.before            c.recognize         d.letter

5) a.sights               b.flights           c.village             d.tribes

6)a. head                 b.beach           c.weather              d.heavy  

 correct form of the verbs

1) He .... TV at 7 o'clock last night ( Watch)

2) I .... letter for an hour (write)

3) What are you doing now? I ..... dinner( cook)

4) Mai .... HaNoi next summer ( visit)

5) Tuan often .... to school by bus ( go)

6) He .... this house in 2009 ( Buy)

7) They were having dinner when the phone .... ( Ring)

8) Miss Hoa .... here an hour ago ( Be)

9) They .... Toyota cars in Japan many years ago ( Produce)

10) This house ..... next month ( Finish)

Change the sentences into passive

1)Hoa took Lan to the zoo last week

2) They will visit their friends this summer vacation

3) She did her homework last night

4) Lan cleans the floor every day

5) People speak English all over the world