Modern science has given clear evidence ________ smoking can lead to many diseases.[ ]

It’s ________ unusual chance for Mr White to get such________ useful advice.

How can I thank you —Don’t mention it Any other man in thatcase _______ the same thing

Do you like your maths teacher? —Sure, because he is the teacher ___ helps me a lot.

We’ll talk about some cases_______ drivers obviously knew the traffic rules but didn’t obey them.