When it comes to the civil war in Syria, the US government’s attitude towards it has experienced a(n)_______ change , which may have a positive effect on Syria present situation.

It was nothing but his ten years of hard work that _______ his success in his research.

Do you know _______boy in the car –Yes, he is Tom.

That’s the hotel___last year.[ ]

I’m sorry I’m late for work _______ the heavy traffic this morning.