3 Rewrite the sentence 50 that it contains the word incapitals.
a rm sure you know the difference between a solid and a gas! MUST
...You ..Musl.K.I'\Qw.lhe. ..di±±e.re.l'\ce...Qe.l..we.e.V',..a ..Solid ..and ..a ..qas/ ...
b If a substance does not contain hydro gen, then we are sure that it isn't an acid. CAN'T
c If we put some litmus paper in a solution and it turns red, then we are sure that the
solution is an acid. MUST
d If we add a substance to a red-cabbage solution and it stays red, then we are sure the
substance isn't an alkali. CAN'T
e If we add a substance to a red-cabbage solution and it turns green, then the substance
is sure to be an alkali. MUST
f If we put some litmus paper in a solution and it turns red, then we are sure that the
solution isn't an alkali.
g If it's not an acid, ar an alkali, then it's sure to be neutral.
h If we use a universal indicatar to check a substance, and it turns purple, then we are
sure that the substance isn't an acid.
4 Rewrite each sentence 50 that it begins as shown and contains the word incapitals.
CAN'T
MUST
CAN'T
a If the warld becomes warmer, as some scientists predict, it is possible that Europe will
change dramatically over the next century. COULD
If the world becomes warmerassQMe.Hs.cie.l'\lisls9re.ctic.l)~urQpe.cQu(d
d:t?mqe.HctmMalic.aJltjQve.rlke.l'I.e.xlce.l'I.lUGJ.
b H is possible that there will be no snow-covered mountains in Europe by then. MIGHT
There ..
c And it's possible that areas in the south of Europe will become deserts. COULD
And areas ..
d H's also possible that heavy rain will become normai in narthern Europe. MIGHT
G
e While it's possible that southern Europe will be always shart of water.
While southern Europe ..