He spent too much time talking on ______ phone while we were all busy at _____ work.
All her time _______ experiments, she has no time for films. A. devoted to do B. devoted to doing C. devoting to doing
He knows nothing about it, so he can’t help _______ any of your work.
Before going abroad he devoted all he could _______ his oral English.
He spent every minute he could _____ spoken English.
He ran as fast as he could _____ to catch the early bus.