About_____ of the earth__ __covered with water, but we have less and lessavailable fresh water.
| A．three-fourth, is | B．three-fourths, is |
| C．three-fourth, are | D．three-fourths, are |
____Lucy ____Lily knows French, so I have to ask a third person for help.
A. Neither; nor
B. Not only; but also
C. Either; or
People were advised _____ in the river because it is very deep.
A. not to swim
B. not swimming
C. to not swim
Michael’s father wants to ____ the best education in the country______ his son.
A. provide, with
B. provide, for
C. provide, to
John didn’t know ____ the medicine.
A. what to take
B. how to take
C. where to eat
This is the question______ we are talking about now.
A. which B. who C. what