Three-fourths of the surface of the earth＿＿＿sea．
| A．is | B．are | C．were | D．has been |
形容词、副词
（全国I 26）. I have seldom seen my mother ________ pleased with my progress as she is now.
| A．So | B．very | C．too | D．rather |
（浙江卷14）. __ that's important is that you are doing your best and moving in the right direction.
| A．One | B．All | C．Everything | D．Anything |
. Helping others is a habit, _______ you can learn even at an early age.
| A．it | B．that | C．what | D．one |
.（辽宁卷33）. The fact that she was foreign made _____difficult for her to get a job in that country
| A．so | B．much | C．that | D．it |
（上海卷27）. If our parents do everything for us children, we won't learn to depend on
| A．themselves | B．them | C． us |
D．ourselves |