How long do you think it will be _______ scientists succeed in providing a cure for cancer?
Jane is not good at sports,but when itto cooking,she’s excellent.
He finds it hard to keep _____ with the change of society if he stops learning.
A warm welcome _______to the Russian guests at the airport tomorrow morning.
Please tell me the way you thought of _______ the garden.
I _________ him for his success in business.