At last I have discovered how ____ the door.

A)
open
B)
is open
C)
to open
D)
to opening

Correct Answer :   to open

Recently Updated in Gerunds Questions
Q .
Don't forget _____ your mother!
A)
call
B)
calling
C)
to call
D)
called out

Correct Answer : Option (C) :   to call

Q .
People are not allowed __________ in the kitchen.
A)
to smoke
B)
smoking
C)
to smoking
D)
to having smoke

Correct Answer : Option (A) :   to smoke

Q .
I don't want _________ yet.
A)
live
B)
lived
C)
leave
D)
to leave

Correct Answer : Option (D) :   to leave

Verbal Ability MCQ's

Synonyms
Antonyms
Tense
Adjectives
Selecting words
Homophones
Gerunds
Identify the Errors
Identify the Sentences
Plural Forms
Nouns
Articles
Prefix
Suffix
Sentence Formation
Tag Questions
Prepositions
Substitution
Joining Sentences
Sentence Improvement
Fill in the blanks
Paragraph Formation
Sentence Arrangement
Active and Passive Voice