—Do you have ________ difficulty working out the problem?—Yes. It is ________ me.
What the children in the poor mountain village need ________ textbooks.
I don’t think Richard could have done such a stupid thing last night, ________?
Don’t ________ when he is telling the story.
David Beckham suffered a serious injury this weekend ________ playing for AC Milan, and it appears the soccer star will miss the World Cup.
All her time _______ research, the scientist has no time for films.