derstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.

People exposed to radiation are more _______ to suffer from certain forms of cancer, which can be ______ but can’t be ______at present.

_____ prepare for the coming exam, Dave stays up late every night.

You seem to show interest in gardening.— What? _____, I’m getting tired of it[ ]

It was reported that one-third of the passengers in the bus in the traffic accident last week.