Question
Rearrange them to form meaningful sentences :
$(a)$ When the enemy / destroy the enemy planes / sends planes to attack, our planes must ,
$(b)$ We can / the enemy planes / the approach of / if we know about / do this only
$(c)$ We have / called Radar / of equipment / for this purpose / a special kind
$(d)$ The Air Force / the enemy planes / by shooting down / can protect / our places
$(a)$ When the enemy / destroy the enemy planes / sends planes to attack, our planes must ,
$(b)$ We can / the enemy planes / the approach of / if we know about / do this only
$(c)$ We have / called Radar / of equipment / for this purpose / a special kind
$(d)$ The Air Force / the enemy planes / by shooting down / can protect / our places