[ Gerunds and Infinitives ]
Our neighbour threatened ———- the police if we didn’t stop the noise.
A. calling
B. to call
C. called
D. call

Random Topics:
VerbsAdverbs, Modals, Preposition of timeSimple PresentThe First Conditional (if/unless)Tenses and StructuresTenses - AuxiliariesPast ParticiplesGrammar & VocabQuantifiers & Modal VerbsGrammar and Sentence StructureOther quiz:
Conjunction › ViewWe went for a walk ______________ it was raining.
A. moreover
B. because
C. therefore
D. even though
Grammar › View
Michael works for BP and ______.
A. so am I
B. so I work
C. so I do
D. so do I
Conjunctions › ViewShe’s working late next Friday ____________ she can’t come to the party.
A. so
B. because
C. therefore
D. or
Present Simple Tense › View
What time ___ you often ___ up every morning?
A. Does/get
B. Do/get
C. do/gets
D. don’t/gets