3. People often say a lot of natural        (phenomenon) can't be explained in the field of science.

2. Bill was doing a lot of physical exercise to build up his        (strong) .

1. Large        (quantity) of money and food have been sent to the earthquake victims.

5.                the environment all over the world improves(before)

可能要过很多年全世界的环境才会有所改善。

4.                   he heard someone shouting loudly suddenly.(强调时间状语)

在午夜时他听到有人突然大声喊叫。

3.                         we shall start.(强调until引导的时间状语)

在你回来之前，我们不会开始的。

2. Anyone who goes all out for his goal                . (likely)

 任何一个为目标而全力以赴的人都有可能成功。

1.               they have been dreaming of travelling to.(强调宾语)

他们一直梦想去瑞士 (Switzerland) 旅行。

5. In the city where they spent their holiday,they had a quarrel for the first time. ―                                     they had a quarrel for the first time.

4. They didn't leave to travel until they finished the work.

―                           they left to travel.