Do you have any difficulty (chat) with your deaf uncle?
No. His body language helps me understand him well.
Visitors are asked not much noise in the National Gallery.(make)
Mr.Zhang,your is excellent!Have you ever studied abroad?(pronounce)
I don't use my mobile phone a lot at night,as its blue light is to my eyes.(harm)
LEGO is one of the that can develop children's creativity.(toy)
I offered my seat to an elderly man,but he refused .(polite)