Đề: Fill in the blank of the following passage with ONE suitable word.
There is much more water than land (1) ____ the surface of the earth. The sea and oceans (2) ____ nearly four-fifths of the whole word, and only one-fifth of (3) ____ land. If you traveled over the earth (4) ____ different directions, you would have to spend much more of your time (5) ____ on water than on roads or railways. We sometimes forget that (6)____ every mile of land there is four miles of water.
There is much water on surface of our earth that we (7) ____ to use two words to describe. We use the word seas to (8) ____ those parts of water surface which (9) ____ only a few hundreds of miles wide, the word oceans to describe the huge areas of water eehich are thousands of miles wide (10) ____ very deep.