_____ with the size of the whole earth, the biggest ocean does not seem big at all[ ]

It’s a pity that I missed the chance to get the signature of my favourite sports star, Liu Xiang ________.[ ]

—What areyou busy with — We are carrying out a research ____ thecauses of cancer

.What time is it — It’s_______________.

eit was hard to _____ with the money he got paid, he wanted to take ____ job