Tính nồng độ mol /l của các ion có trong :

- dd H2SO4 15 % ( d=1,1 g/ml ) 

-1,5 l dung dịch có 5,85 g NaCl và 11,1 g CaCl2

Rewrite the sentence or join the pairs of sentences begining with the word(s) given 

1. He worked out the answer . It was clever of him 

It was.....

2 . He was crossing the road . I caught sight of him

I noticed .....

3 When we finally heard that David had arrived , we were very relieved

We were relieved ....

4 Why have you thrown up your job? You're mad

You are...

5 Mr Linh doesn't allow his teenage children to go out in the evenings 

Mr Linh doesn't let...

Mr Linh makes ...