Two thirds of the earth _________ covered by water.
A: are
B: be
C: has
D: is
A: are
B: be
C: has
D: is
举一反三
- __________ of the surface of the earth __________ covered with water. A: A third; is B: A third; are C: Two thirds; is D: Two thirds; are
- ______ of the surface (表面) of the earth is covered with water. A: First third B: B. Two thirds C: One three
- About _____ of the earth's surface is covered with water. A: three quarters B: three quarter C: two fifth D: two third
- _______ of the earth is covered by water.
- Seventy-five percent of the surface of the earth （） by water. A: are covered B: is covered C: have been covered D: was covered