3.Tickets for a Dutch rock festival next year have been snapped up within hours despite the fact that buyers had no idea who will be playing.

snap up抢购

例句：I snapped up the coat at that cheap price.

在价格便宜时我买下了这件大衣。

The kind of articles were quickly snapped up.

这种物品很快就被抢购一空。

4.Organisers were selling the tickets early to avoid a big tax increase on live performances, which comes into effect on 1 January.

come into effect(文件、合同）生效

例句：The contract will come into effect upon signature.

此合同将在签字后生效。

1.A senior member of the Russian parliament described the resolution as a historic document, not just for relations with Poland, but also for Russia itself as it fights what he called the "falsification of history".

not just but also是not only,but also的变形，不仅，而且。这句话的主语和谓语是：A senior member of the Russian parliament described，后面是描述的具体内容。

2.It was only in 1990 that Mikhail Gorbachev admitted the Soviet secret police had been responsible.

It was that强调句型

用“it引导”的强调句，又叫做分裂句，有下面几种情况

1)强调主语，例如：

It was she who had been wrong. 错的是她。