Topics: Grammar Clauses
Factories allow these dangerous substances to pour into the rivers, ___ their chimneys fill the atmosphere with poisonous fumes.
A. while
B. where
C. although
D. so that
Select your answer:

Random Topics:
Present ProgressiveSecond ConditionalsPresent Simple vs Past SimpleModals of DeductionGerundsModalsSimple Past - Irregular VerbsVerb PhraseGrammar and ReadingPresent Progressive (Future)Other quiz:
Grammar › ViewWhat is the subject of this sentence?: My closet has lots of clothes in it.
A. has lots of clothes
B. My closet
C. in it
Grammar › View
The car broke ________ and I had to phone for help.
A. down
B. up
C. off
D. in
