s first aircraft carrier, ____ as long as 304metres, was handed over to the People’s Liberation Army navy in 2012

Our classroom _________ twice a day. So it is veryclean.–It is important for us to do this.

25Sara said that she had to finish the experiment_____ week

Water is vital _______every living thing ______, without which the world would be a dead place.[ ]

The runner in the middle of the race.