The quality of products __________ over time.

A)
are degrading
B)
were degraded
C)
have been degrading
D)
have degrading

Correct Answer :   have been degrading

Recently Updated in Tense Questions
Q .
Would you like a coffee?
A)
future simple
B)
future perfect
C)
Conditional
D)
present simple

Correct Answer : Option (C) :   Conditional

Q .
I haven't had breakfast yet.
A)
simple past
B)
simple present
C)
present simple
D)
present perfect

Correct Answer : Option (D) :   present perfect

Q .
Why do you live in France?
A)
Past perfect tense
B)
present simple
C)
present perfect
D)
present continuous

Correct Answer : Option (B) :   present simple

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