He is looking forward ________his father.
.China is one of the largest countries in the world, _______ 9.6 million square (平方) kilometers.
We advised them to take a rest, but they insisted _______ the work.
I delayed _______ your letter because I had been away for a week.
.If he succeeded _______ a job, his children wouldn't be suffering from hunger now.
I still remember _______ to my home town when I was young.