Born into a family with three brothers,David was ________ to value the sense of sharing.
I sent for a technician ______ John isn’t familiar ______ the computer software they use?
--- What’s the time?--- Oh, I forgot to have my watch ______.
The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.
Yifu library was named ______ a businessman devoted to China’s education.
The boy knocked down by the car stood up all by himself , _____unhurt.