To murder in "cold blood", it means to murder:

• coolly
• unfeelingly
• thoughtlessly
• deliberately

If somebody has worked for "donkey's years", it means he has worked:

• for donkeys
• for a few years
• for a long time
• for a short time

Replace the underlined portion with an idiom from the list below:
They finally agreed on the business deal.

• let the cat out of the bag
• see eye to eye
• to feel under the weather
• to cut a corner

The idiomatic expression "A slap on the wrist" means:

• Short on time
• A very mild punishment
• To have a dispute
• To force an issue

He says he has invented a time machine, which is clearly a load of cobblers.

• Genuine
• Great
• Nonsense
• Significant

Rub shoulder with

• quarrel with a person
• come in contact with
• be friendly with someone
• have a cause to fight

To take to heart

• to be encouraged
• to grieve over
• to like
• to hate

To move heaven and earth

• to cause an earthquake
• to try everything possible
• to pray to all Gods
• to travel extensively

To smell a rat

• to experience a bad smell
• to predict danger
• to predict outbreak of plague
• to be suspicious