Danny is good at ______.
I don’t doubt _______ he can finish the task, but I doubt _______ he is willing to do it.
Sanya is ___ attractive city. It’s ____ beautiful place that a lot of visitors go there every year.
—Could you tell me ______?—At nine o’clock tomorrow morning.
He was so _______ when he heard the ______ news that he got the first prize in the concert.
A lot of trees _____ around here every year, and we can enjoy fresher air now.