) When we went shopping we wanted to buy ___ new. C) something
2) I’m sorry, but I haven’t got ___ advice to give you. B) any
3) He looked at the engine but he couldn’t see ____. C) anything
4) She had ___ free time after she retired than previously. A) more
5) We usually drink ___ water in hot weather. B) a lot of
6) He wants ___ sugar in his tea. B) a little
7) Those are ___ files. A) Bill’s
8) There is ___ in our garden. A) a nest of a bird
9) This is these _____ ball. C) boys’
10) Ann had to use my ruler as she had left ___ at home. C) hers
11) The boys are with ___ mum today. C) their
12) Last Saturday we went fishing, but we didn’t catch many ___. B) fish
13) I can give you some money. ___ in my wallet. B) It is
14) Our two ___ are crying all the time. A) babies
<span>15) What do you need these ___ for? A) boxes </span>
Mg(OH)2=MgO+H2O
2Fe(OH)3+3H2SO4=Fe2(SO4)3+6H2O
Zn+H2SO4=ZnSO4+H2
P2O5+3H2O=2H3PO4
P2O5+6KOH=2K3PO4+3H2O
<span><span>4Fe</span>+<span>3<span>O2 </span></span>→ <span>2<span>Fe2O3
</span></span></span><span><span>Fe2O3</span>+<span>6<span>HCl</span></span> → <span>2<span>FeCl3</span></span>+<span>3<span>H2O </span></span></span>
<span><span>FeCl3</span>+<span>3<span>NaOH</span></span> → <span>3<span>NaCl</span></span>+<span>Fe<span>(OH)</span>3
</span></span><span><span>2<span>Fe<span>(OH)</span>3</span></span>+<span>3<span>H2SO4</span></span> → <span>Fe2<span>(SO4)</span>3</span>+<span>6<span>H2<span>O
</span></span></span></span>