1 tia sáng chiếu tới gương phẳng 1 góc 60o. góc hợp bởi tia tới và tia phản xạ bằng?

A 45o

B 60o

C 90o

D 30o

các bạn có biết lm sao để đổi tên trên học 24 này ko mink lm hoài ko đc

2)Chris can ski, I can.........
3)They've a color TV, Mary has .................
4)We live in a small flat,.........do they
5)Mary didn't know the answer to the teacher's question,............did Tom.
6)Tom plays chess well, ...........does Minh.
7)Mr.Nam didn't win the race. Mr.Trang didn't...................
8)My wife can't play the piano,.............can her sister.
9)She wore a green coat yesterday, ...........did Bill.
10)Lan doesn't like sweets,............ does Huong.
11)The children don't take that medicine,...............does she.
12)Mary types well, ............ 
13)I am not interested in reading that book,............ is she.
14)They will leave at noon, I will........
15)He has an early appointment,.......do I.
16)I must write them a letter,........does she.
17)I wasn't in London,............was she.

18) I am a student, and Mary is, ____
19) I am twenty, and _______ is Peter.
20) My sister can swim and _________ can I.
21) We can sing, and _________ can they.
22) Peter likes tea, and I do, ________ .
23) We play tennis, and ________ do they.
24) - I can cook.
- I can, ________ .
25) - I drink coffee.