Expressions: look, see, watch

Which of these would you say to warn someone to be careful?
1. look back
2. watch out
3. see danger
John told me to watch this space. What did he mean?
1. He was about to be promoted.
2. He was over the moon.
3. He was a detective searching for a criminal
If you say to a work colleague "watch your back!" what do you mean?
1. you're telling him he's at risk of being sacked
2. you're warning him to be careful about colleagues attacking him
3. you're suggesting he go intp the bathroom to check in the mirror
The matter is being looked into.
1. It is being considered
2. It is being investigated
3. It is being searched
He's a clock-watcher
1. He is crazy about old clocks
2. He is never happy unless he knows the time
3. He does no more work than is absolutely necessary
She's a looker!
1. She's beautiful
2. She puts her nose into other people's business
3. She's a detective
Watch your step means
1. Check that your shoes are good for walking
2. Be careful
3. Walk with measured paces to calculate a distance
He foresaw the outcome
1. He guessed what was coming
2. He planned what was to come
3. He was sure that it would be a success
When she ridiculed him
1. he saw stars!
2. he saw blue!
3. he saw red!
She looked him over
1. She was taller than he was
2. She examined him
3. She decided not to use him