15 years in the USA, he has finally decided to _____ American citizen-ship.

Must I clean the window now? —No, you ______.

The artist was born poor,poor he remained all his life

_____ it was very cold, _____ my friend still went swimming in Jialing River this morning.

It’s generous _______ him to give so much money tocharities. Now he thinks it’s important _______ him to help people in poorareas.