trong bài thơ "đêm nay bác ko ngủ"

hãy tả lại Bác Hồ

1 how many classes are there in your room

how many classes does....................................

2 mr ba rides his motornike to work everu everyday

mr ba get.................................

3 the children are walking to school now

the children are going to...........................

I find and corect the mistake in cach sentence

1 he isn't very tall so he is kind and friendly

..............................................

2 i'm playing football on my team

............................................

3 we are going to han river to watch the international friework comepetition,but you can watch it live on tv

.............................................................

4 she works as a volunteer teacher to a village,and everyone loves her

............................................

5 i'm going to the river with my parents watching the firework display

...................................................

I write questions for the underlined part

1.they are visiting a milk farm on saturday

..............................................

2 i'm going to the jodo club with my brother

...................................................

3 i'm not going to your party because i visit my grandparents

.......................................................

4 we're working on our school project

.................................................

5 she understands things very quickly and casily

.....................................................

Tác dụng của biến trở là gì?

Cho hình chóp đều S.ABC đường cao SO = 7 cm đường cao trong tam giác ABC bằng 3 cm.

a) Tính diện tích toàn phần hình chóp.

b) Tính thể tích hình chóp