Matching blanks with missing phrases or sentences. For this sort of question some parts of a passage have been removed and students must put the correct phrases in the blanks by using grammar, vocabulary and meaning. Read the paragraph, and as you come to the gaps, look below and try to see what would fit.
Landmines are hidden explosives which detonate when an electric circuit is completed
1......................................... One can see why they have been widely used in war. They are cheap: 2......................................... They are a good form of defence and also offer an early warning system if any approaching enemy set one off. They can inflict heavy losses on the enemy 3.........................................They do, however, also have severe drawbacks. Of course, they are cruel but war is cruel. The problem is that mines are not targeted. They will kill anyone - 4........................................ - and they will go on killing for years after the war has ended. Mine-clearing is difficult, dangerous and expensive - it can cost around US$1,000 per mine. Until the mines have been removed life cannot return to normal, farm land cannot be used and people continue to lose their lives and limbs for a forgotten cause. It is for this reason 5.........................................
a. friend or enemy, soldier or child playing
b. or when disturbed by pressure or vibration
c. that there is a growing movement to ban mines as a weapon of war
d. and the more powerful ones can stop tanks