I cyougive me a hand—_____.

_ difficult and challenging the task may be, wemust finish it on time, because there is a possibility _______our work will godown in history.

Guess, how much does it cost—I think itcosts 15 and 20 dollars.

We all ______ Yang Liwei as an example of a man who managed to live hid dream.

Thanks for_____________. Which of the following is right