—Jane, I'm late for your party _______ an accident. I'm sorry.
—It doesn't matter. Enjoy yourself here.
句意：-Jane，因为一场意外你的聚会我迟到了，我很抱歉。-没关系，在这里玩得开心点。
ahead of在…之前；instead of代替…；because of因为…。根据句意可知，这里说的是迟到的原因，故选C。
—Jane, I'm late for your party _______ an accident. I'm sorry.
—It doesn't matter. Enjoy yourself here.
You can only borrow two books ____________ if you don’t have a library card.
We should speak________when we meet someone for the first time.
—Sorry, Johnny, I failed in the physics exam.
—Never mind!________the exam is not so easy.
There is no need to push the kids too hard.______, you hate to see them stressed out.
The land is________rain，because it hasn't rained for several months．
As students, we should____________ourselves. We can’t spend much time playing computer games.
—Mom, I won the first prize in the English speech contest.
—Fantastic. I am really ________ you!
—My father thinks using mobile phones is a waste of time. Besides, it’s ________ my mind and body.
—So does my father. He refuses to let me have a phone of my own.
—Let’s divide the rubbish into different kinds before throwing it away.
—OK. It’s ___________ us to use some of it again.
