_________ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.
—Would you tell me ____you want your tea, with sugar or milk? —Sugar, please.
As your spoken English gets better, so ___ your written English.
I have only one day left ___ traveling to Kunming and then flying back home.
This is our contribution to ________ world of the 21st century, ________ world of independence and mutual understanding.
—She was late for the party. —That’s _________she had forgotten the exact time.