题目内容：

He doesn’t listen to our advice and often drinks and smokes more ____.
A.than is good for his health B.than that is good for his health
C.than his good health D.than his good health does
He advised us to withdraw from the election _____ get involved.
A.so not as to B.not so as to C.so as to not D.so as not to
He was afraid he would have to ____ her invitation to the party.
A.refute B.reject C.return D.decline
Dr.Jones checked the patient’s ____ carefully before making his diagnosis.
A.symbols B.symptoms C.signals D.signatures
He failed to ____ himself to the new environment.
A.adopt B.adapt C.attach D.abduct
You should hire a more ____ manager than the one you currently have.
A.sufficient B.effective C.efficient D.respective