The solution had been found, _________ we hadn't realised it.

• however
• even
• therefore
• although
Correct Option: D  [ although ]

Remark: "although" means "in spite of the fact that" in this sentence.

One should always try to keep one’s word.

• to guard a secret
• to be too shy to speak
• to remember
• to fulfill a promise
Correct Option: D  [ to fulfill a promise ]

Remark:

The idiomatic expression 'pull yourself together'.

• Drag oneself
• help one
• get angry
• calm down by oneself
Correct Option: D  [ calm down by oneself ]

Remark:

They will appeal _________ your decision.

• at
• for
• against
• in
Correct Option: C  [ against ]

Remark:

Devious (find Antonym)

• Straight
• Obvious
• Simple
• Superficial
Correct Option: A  [ Straight ]

Remark:

It was foolish ________ you not to go there.

• to
• of
• for
• on
Correct Option: B  [ of ]

Remark:

Our life promises a lot ________ pleasure and we must learn to enjoy it.

• with
• for
• of
• at
Correct Option: C  [ of ]

Remark:

The income derived __________ ownership of land is commonly called rent.

• from
• with
• to
• at
Correct Option: A  [ from ]

Remark:

_____________ rich is not always happy.

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

Remark:

Inclement (Find Synonym)

• Selfish
• Active
• Unfavorable
• Inactive
Correct Option: C  [ Unfavorable ]

Remark: