The book was bought yesterday.
The rule must be learnt.
This writer is known all over the world.
The house will be built next year.
The picture may be spoiled by water.
16 will paint ( Conditional I- условное предложение Первого типа, в главном предложении употребляется Future Simple)
17 starts- фильм начинается по расписанию ( Present Simple )
18 worrying - герундий употребляйся после выражения it’s no use
What book character could disappear and appear <span>again</span>