—My listening is very poor. Can you give me some________?— Of course.

       is one of the greatest scientists, who won the Nobel Prize for physics.

 –Excuse me, I’d like a pair of shoes.－What about this _______? You can try ______ on.

---DO you have any       for this summer vacation? ---I want to take a trip to Qinghai.

— Will Mr Shu give us a talk about the survey next week?— Yes, and he will give us ______ about it.