Forensic experts have .......... samples from the spot to ........... whether there are any traces of explosives.

When I reached the station, the train :

spread all a)above  b)under c)over the world,lay emphasis on vocational training

So they are mainly interested in a)providing  b)making c)giving some kind of vocational training for them.

 I would greatly appreciate it if you didn't ...........  up that old argument again. 

 Who would like to ..............  off the debate?