Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
He always brings me a pretty gift ____ he comes to visit me.
It’s very dangerous to be ____ to the SARS virus without any protection.A disclosed B uncover C affected D exposed
John said he would pay ________ second visit to China ________ next year.
---Have you brought the book I lent to you yesterday? ---Sorry, I put it on my bookshelf and _________ all about it
David is into football, and he wonders how much time it ______ to be a good footballer.