Bài 1:

Ước chung của  là ước của ước chung lớn nhất và gồm:

46 B

47 A

48 C

49 B

50 C

31 hasn't had

32 is

33 drank

34 liked

35 swim

36 What time does Hoa go to bed every evening

37 We are going to Hue imperial City with our friends next Summer

38 She is more careful than her sister

bài 2 :

a) = 3^11-9 - 98 : 49

= 3² - 2

= 9 - 2

= 7

b) = 2011 + 5. [300 - 10² ]

= 2011 + 5 . [300 - 100]

= 2011 + 5 . 200

= 2011 + 1000

= 3011

The news(be)... useful

=> is

My sister (drink) a lot of beer last night

=> drank

She (like)....taking photos

=> likes

swims