6.B

7.A

8.B

9.B

10.A

1.C

2.B

3.A

1.D

2.C

3.C

-Cái áo này chỉ 50.000đ à?( chỉ là trợ từ, à là tình thái từ)

-Vâng, chính tôi đang nghĩ đến điều đó.( vâng là thán từ, chính là trợ từ)

\(\dfrac{8.5-8.2}{16}\)=\(\dfrac{8\left(5-2\right)}{16}\)(đặt nhân tử chung)

=\(\dfrac{3}{2}\)

1.D

2.B

3.D

Gọi số học sinh đăng ký tham gia câu lạc bộ của 3 lớp 7A,8B,9C lần lượt là x,y,z (hs.x,y,z ∈ N*)

⇒\(\dfrac{x}{45}\)=\(\dfrac{y}{48}\)=\(\dfrac{z}{42}\)và x+y+z=45

Áp dụng tính chất dãy tỉ số bằng nhau, ta có:

\(\dfrac{x}{45}\)=\(\dfrac{y}{48}\)=\(\dfrac{z}{42}\)=\(\dfrac{x+y+z}{45+48+42}\)=\(\dfrac{45}{135}\)=\(\dfrac{1}{3}\)

\(\dfrac{x}{45}\)=\(\dfrac{1}{3}\)⇒x=\(\dfrac{1}{3}\).45=15

\(\dfrac{y}{48}\)=\(\dfrac{1}{3}\)⇒y=\(\dfrac{1}{3}\).48=16

\(\dfrac{z}{42}\)=\(\dfrac{1}{3}\)⇒z=\(\dfrac{1}{3}\).42=14

Lớp 7A:15hs

Lớp 8B:16hs

Lớp 9C:14hs

1.    She is taking care of the baby girl.

→The baby girl is being taken case by her

2.    Children should treat old men with respect.

→Old men should be treated with respect

3.    She was wearing her new T-shirt when I met her yesterday.

→Her new T-shirt was worn when I met her yesterday

4.    The waiter brings me this dish.

→I am brough this dish

5.    Our friends send these postcards to us.
→These postcards to us were sending by our friends

6.    Their grandmother told them this story when they visited her last week.
→Them were told this story when they visited her last week

7.    Tim ordered this train ticket for his mother.

→This train ticked was ordered for his mother

8.    You didn’t show me the special cameras.
→The sprcial cameras weren't shown me

9.    She showed her ticket to the airline agent.
→Her ticket was show to the airline agent

10. He lends his friend his new shoes. 

→His friend was lent his new shoes