His parents are convinced ____ the fact the their son always focuses his mind ___ his study.
. I felt it rather inappropriate to turn up at the graduation ceremony _____ jeans and a T-shirt.
. Don’t leave the chocolates _______Cathy can get them. They are not good for teeth.
. After John stayed in shanghai for a couple of days, he got the impression _________the city was very fascinating.
. Joe’s_______ in the get-together surely brought us a lot of pleasure as he is a man with a strong sense of humour.
. _________ about wild plants that they decided to make a trip to Madagascar for further research.