She usually writes about environmental _________(题材)for the newspaper.
He __________ (宣称) that he had finished the work.
He ordered the army to __________ (侵入) the country at dawn.
The country's difficulties __________ __________ (由……引起) the reduced value of its money. (arise)
He __________ __________ __________ (专心于) reading when I came in. (absorb)
I__________ __________ __________ (屏住呼吸) and hide behind the door. (breath)