—What caused the party to be put off?
—__________ the invitations.
A.Tom delayed sending | B.Tom’s delaying sending |
C.Tom delaying to send | D.Tom delayed to send |
After several years of observation, the research group ______ the conclusion that language acquisition is faster when students ______ to the situation where it is spoken.
A.has come to; expose | B.have arrived at; are exposed |
C.has concluded; are exposed | D.have reached; expose |
It will be many years ______the doctors and medical scientists can find _____ for cancer.
A.since; cures | B.when; treatments | C.before; cures | D.until; treatments |
We have to ______ everything question in detail ______ we take action.
It is clear that no use can be made ______radium _____we don’t know clearly the characteristics of it.
A.from; if | B.of; unless | C.from; unless | D.of; if |
From my point of view, the theory that ______ by the scientist is not quite scientific.
A.was risen | B.brought up | C.had been raised | D.was put forward |