You should finish your work in _______ hour.

• the
• an
• a
• no article
Correct Option: B  [ an ]

Remark:

_________ elephant is the largest land animal. (appropriate article)

• a
• an
• the
• Zero article
Correct Option: C  [ the ]

Remark: "the" is used because referring to the specific category of "the largest land animal," which is a well-known fact.

It's _________ most expensive hotel in town.

• a
• the
• one
• None of these
Correct Option: B  [ the ]

Remark:

Here are ________ dozen of bananas.

• an
• a
• the
• no article
Correct Option: B  [ a ]

Remark:

The work took half _______ hour.

• a
• an
• the
• none
Correct Option: B  [ an ]

Remark: