The boy was so tired that he fell asleep _____________ his mother could take off his clothes.
____ difficulties we meet, we can work them out.
The meeting was expected to start at 9 o'clock but the manager didn't turn up ______ twenty minutes later.
She found her calculator ________ she lost it.
The WTO cannot live up to its name _______ it does not include a country that is home to one fifth of mankind.
You will succeed in the end _______ you give halfway.