[ Adjective + to + Verb ]
it’s difficult to understand
A. a dog
B. a plane
C. an English book

Random Topics:
Relative Clauses beginning with PrepositionsPast Tense and Perfect Tense1st and 2nd ConditionalsConjunctions and Verb TensesModal Verbs for Permission and ObligationConjunctions in Complex Sentencesa, an, the, zero articleAdverb Clause ConnectorPossessive PronounsGerunds and InfitinitivesOther quiz:
Grammar › ViewThe plural of deer is
A. deers
B. does
C. deer
Mixed General Quiz › View
Identify the part of speech for the underlined word: David likes the food in the cafeteria, yet he seldom eats here.
A. Preposition
B. Conjunction
C. Interjection
D. Adverb
Look out! We __________ crash!
A. are going to
B. will
C. shall
Grammar › View
a premise that is untrue or distorted
A. premise
B. false premise
C. faulty reasoning
D. false consensus
