______ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai.
Although at present human egg cells and embryos needed for cloning research are difficult _____, Newspapers _________ evil leaders hoping to clone themselves.
Quzhou is ______ most comfortable city, where you can visit a great many interesting places, such as______ mysterious Longyou Grottoes.
I have already forgotten ______ you bought the computer.
With five professional hands ______ them next month, these students are sure to complete the experiment on time.
_______ is announced in today’s newspaper, we have launched another man-made satellite.