When she returned home, she found the window open and something ______.
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.