Question

Necessary warning _________ before the storm came. *
a) will have been issued
b) have been issued
c) has been issued
d) had been issued​

Answer 1

Necessary warning had been issued before the storm came.   It is a two clause sentence.

What is a two clause sentence?

• A two clause sentence consists of a principle clause or a subordinate clause.
• If the principle clause is in past tense than the subordinate clause can be in past indefinite, past continuous or past perfect tense and vice versa.
• Here the the principle clause is in past perfect tense.
• The correct option is (d): had been issued​