How long ...... (you / smoke) that awful cigar of yours before your wife comes home?

How long ...... (Jane's sister / repair) the old radio set before she realises that it can't be repaired?

...... (they / drink) a lot of hard drinks by the time they fall asleep?

...... (the supervisor / sit) at his desk checking reports for a long time by the time he decides to take a break?

...... (he / run) the company for a long time by the time the accountant realises that there's been some sort of fraud?

How long ...... (he / look) after your sister's son when you find out he's taking drugs?

...... (the locksmith / work) with his brother for a long time when he decides to start up his own business?

...... (the manager / delegate) work to the controlling department for some time when he finally realises that they are not responsible for those tasks?

...... (you / manage) the accounts for well over a year when you finally find out about your mistakes?

...... (the travellers / walk) about the mountains for a long time before they are finally rescued?

...... (they / write) articles for the paper for a long time when they finally realise that the paper will never pay them well?

How long ...... (they / stay) at the B & B when they see their first cockroach?

How long ...... (the supervisory board / wait) before they finally take action?

How long ...... (the advisor / send) his boss memos about the possible solutions before she actually takes notice of them?

...... (you / give) private English classes for a long time by the end of the month?