. The thing that ______ is not whether you fail or not, but whether you try or not.
The patient was in bad need of operation but there was no guarantee(保证) that she would survive the anaesthetic (麻醉剂), which made the doctors on the horn of a __________.
You _____ get the machine repaired this week. I won’t need it until next month.
Our manager never fails to answer a phone call ______ she is very busy.
Because of the lack of funds, the tunnel project has already fallen behind ________.
The book is rather highly priced, but so well worth ______ that it should be begged or borrowed rather than missed.