—Can I help you with it?—I appreciate your________，but I can manage it myself.                (2012·江苏，21)

 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 __________.

 If it was not an accident, he must have done it ___________.

. In our country, it’s a practice that workers have _____ for the Spring Festival.

Due to the widespread _______ of this medical technology, more diseases can be discovered and treated at an early stage.