viết lại câu :

Wine is bad for for us , so are cigarettes .

Both..............................................................

1.It took me two hours to walk to her village.

      I spent_____________________________________________________________________

2.   Let’s go to my uncle’s farm at the weekend.

      Amy suggested ________________________________________________________

3.   Flying a kite in the countryside is very exciting.

      It’s________________________________________________________________________

4.   It’s not necessary to change the dates of our trip.

      We don’t___________________________________________________________________

5.   Do you want me to show you how to use this?      Would_____________________________________________________________________

6. I have done voluntary work for three years.

     I started___________________________________________               

cặp chất nào tác dụng vs nhau tạo thành chất kết tủa màu xanh 

a. dd bari hidro oxit và dd axit sunfuric

b.dd natri clorua và dd bạc nitrat

c.dd natri hidro oxit và dd đồng 2 clorua

d.dd natri hidro oxit và dd magie clorua

không có câu hỏi à bạn