-- How are you getting along with your English study? Do you need my help? --- __, but I think I can improve it by myself.
____ to nuclear radiation, even for a short time, may produce variants of genes in human body.
It was thanks to luck _____ judgment _____ the driver succeeded in avoiding an accident.
The young man ____ drugs was sent to hospital yesterday.
The time is not far away ________modern communications will become widespread in China’s vast countryside.
____ about wild plants that they decided to make a trip to the mountain.