_______ difficult and challenging the task may be, we must finish it on time, because there is a possibility _______our work will go down in history.
It is clear that if we read English article every day,we________improve our English.
—How can I wake up so early? —Set the alarm at 5:00 a.m., ________ you will make it.
________ I can see, there is only one way to solve this problem.
—I'm sorry, I shouldn't have been so rude to you. —You ________ your temper, but that's OK.
—Mr. Gordon asked me to remind you of the meeting this afternoon. Don't you forget it? —OK, I ________.