Choose the correct item from the choices in the parentheses :

1.Don't walk under the ladder . It's ( dangerous/ dangerously) __________

2.That women sings very ( bad/ badly) _____________

3.Thu is a (skillful / skillfully) _______________ swimmer because she practices every day.
4.Nga ran (fast / fastly) _______________ and won the race.
5.Mr. Dang is a (good / well) _______________ badminton player. He won a gold medal at the Olympic Games.
6The man with the broken leg walked (slow / slowly) _____________ down the street.
7.My mother added some wine to the beef so it tasted (good / well) ______________
8.Nga sat (silent / silently) _________________ in her room.
9.These sunflowers smell (sweetly / sweet) ________________
10.You look (terribly / terrible) ________________ . Are you all right?
11.The child became (violently / violent) ___________ when his friend threw him a snack.
12.Liz is talking (interesting / interestingly) ________________ about her vacation in Da Lat.
13.Shut the window (quiet / quietly) _________________, please.
14.My father is a (careful / carefully) ________ driver. He always drives (careful / carefully) ___________
15.Last week, Liz saw many (different / differently) _________________ types of fish.
16.Tommy and Henry often wear (colorful / colorfully) ________________ clothes.
17.Sharks are not as (dangerous / dangerously) ________________ as people think.
18.(Sudden / Suddenly) ________________, the mummy got up and smiled at the viewers.
19.My grandfather is 80 years old. He walks very (slow / slowly) ________________
20.The food of the restaurant smells (deliciously / delicious) __________________
21.I tried on the shoes and they fitted me (perfect / perfectly) _________________
22.You should follow (strict / strictly) _________________ the traffic rules.
23.If you work too (hard / harly) _________________, you`ll get tired.
24.We should do morning exercises (regular / regularly) _________________
25.I can`t see (clear / clearly) ________________ because it`s too dark.
26.(Lucky / Luckily) __________________, we arrived home late in the evening.
27.My grandparents` garden has many (beautiful / beautifully) _________________ flowers.
28.I always feel (nervous / nervously) ________________ before every exam.
29.She speaks (good / well) _______________ English. She can make herself understood.
30.My children are playing (happy / happily) ________________ in the front yard.
31.They become (sick / sickly) ________________ after eating the poisonous vegetables.
32.The girl looked at me (angry / angrily) _________________ when I walked past her.
33.Tim seemed to go so (slow / slowly) ________________. When would you arrive?
34.If you have a (fast / fastly) _____________ car, why don`t you drive (fast / fastly) _____________?
35.She looked very (happy / happily) _____ at the test results and smiled (cheerful / cheerfully) ________
36.She dressed (quick / quickly) _________________ to save time.
37.We saw an (exciting / excitingly) __________________ action movie two months ago.
38.The teacher explains the lesson (clear / clearly) ________________ to the students.
39.Mr. Hung can keep (fit / fitly) __________________ because he does morning exercises at 5 a.m.
40.The door often stands (open / openly) ___________________

1. big / Thu's / city / it / school / is / the / in / is / and.

-> Thu's school is big and it is in the city.

2. morning / home / he / every / at / breakfast / has.

-> He has breakafast at home every morning.

3. reads / dinner / or / music / to / my / brother / books / listens / after.

-> My brother listens to music or reads books after dinner.

Vì ước chung lớn nhất là 28 nên đặt a =28k, b=28p; k,p là số tự nhiên.

ta có: 28(k+p)=224 => k+q = 8.

Vậy các cặp (a;b) thỏa mãn là: (28;196) , (56;168), (84;140) , (112;112) và các hoán vị của nó.