____ to nuclear radiation, even for a short time, may produce variants of genes in human body.
From mom’s love, patience and understanding, I have learned what a huge responsibility __________ is to raise a child.
The teacher paused on purpose __________ the sudents to stop talking.
--- How are you getting on with your work ? ---Oh, well. Things are going so well as __________.
_________ his membership card, Tim decided to make a phone call to check whether there was something wrong.
--- I am afraid that we can’t finish the task on time. ---Oh, __________. I’m sure we can make it.