A.destructive
B.destruction
C.destructively
D.destructing
A.air pollution
B.acid rain
C.water pollution
D.large oil spill
A.eager
B.eagerly
C.eagered
D.eagerness
A.lack of rain
B.heavy storm
C.strong wind
D.heavy snow
A.extinct
B.extorsive
C.extinguish
D.extort
Since the road is wet this morning,last night ().
A.it must be raining
B.it must rain
C.it must have rained
D.it must have been rained