Correct Answer : Option (A) - Past perfect tense
Correct Answer : Option (A) - Present indefinite tense
Correct Answer : Option (B) - had done
Correct Answer : Option (D) - simple perfect
Correct Answer : Option (C) - simple past
Correct Answer : Option (D) - Past perfect continuous tense
Correct Answer : Option (A) - had been
Correct Answer : Option (B) - Present continuous tense
Correct Answer : Option (B) - Present indefinite tense
Correct Answer : Option (D) - would have saved