It is you, I think, rather than your wife, _________ to blame for your son’s bad behavior at school.
—Are you worried about her safety?—Just ________.She isn't alone.
Though ______money ,his parents managed to send him to a key university.
— Who should be responsible for the accident?— The boss, not the workers. They just carried out the order ______.
Sorry to say I’m busy now and can’t help ______ the lab.
It is widely believed that smoking _________lung cancer.