1)The boys said they were picking up litter on the beach then.

2)Before Lucas arrives at the restaurant, we'll order our meals only.

1)During flood,you should listen to the instructions from local authorities.

2)Mars is one of the most promising planets for life in solar system.

1)During flood,you should listen to the instructions from local authorities.

2)Mars is one of the most promising planets for life in solar system.

1)During flood,you should listen to the instructions from local authorities.

2)Mars is one of the most promising planets for life in solar system.

1)During flood,you should listen to the instructions from local authorities.

2)Mars is one of the most promising planets for life in solar system.

1)I think robots can't replace the role of teachers education.

2)People still send letters to each other in 2050.

1)He asked the villagers how often erthquakes in that region.

2)They told me I could find a wide range of beauty products in their store.