[ 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:
Conjunctions › ViewChoose the conjunction in this sentence: “I stayed home because I was tired.”
A. stayed
B. tired
C. because
D. home
Comparative Degree (Adverb) › View
Lela can concentrate ___________________ if the television is turned off.
A. Well
B. Weller
C. Better
D. Wellest
She’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