11 What ..will ..... I .....do...... (do) if I hear the burglar alarm?
12 If you .....had read..... (read) the instructions carefully, you wouldn't have answered the wrong question.
13 I could repair the roof myself if I ....had......(have) a long ladder.
14 Unless they turn that radio off, I ........will.....(go) mad.
15 If you were made redundant, what ..would.....you .......do.....(do)?
16 We'll have a long way to walk if we .....run......... (run) out of petrol here.
17 If you shake that bottle of port, it ........won't be......(not be) fit to drink.
18 I'll probably get lost unless he ........comes......(come) with me.
19 You .......wouldn't have................(not have) so many accidents if you drove more slowly.
20 If you ........had worn........(wear) a false beard, nobody would have recognized you.