So many uses have been discovered for this wood __________ the supply of white pine is becoming smaller and smaller.
A.then | B.what |
C.that | D.which |
China sent up two manned spaceships and they were also great scientific _______ in the world.
A.campaigns | B.surprises | C.achievements | D.discoveries |
She is one of the few girls who _____ in the kindergarten.
A.is well paid | B.are well paid | C.is paying well | D.are paying well |
Every means _____ prevent the water from _____.
A.are used to; polluting | B.will be used to; polluting |
C.is used to; polluted | D.is used to; being polluted |
Not only I but also Jane and Mary ____ tired of having one examination after another.
A.is | B.are | C.am | D.be |
Nobody but us _____ the secret.
A.know | B.knows | C.have known | D.is known |