--- Can you lend me the book Gone with the Wind?
--- Sorry . I returned it to the library just now. Maybe it is still _______.
A. valuable B. acceptable
C. affordable D. available
With all things _______, we should follow his advice.
A. considered B. having considered
C. being considered D. considering
We discussed three different _______ to the study of mathematics．
A. methods B. accesses
C. means D. approaches
The Chinese scientists claimed _______ a cure for the disease．
A. having discovered B. discovering
C. to have discovered D. that they discover
He likes helping others, _______ those who are in trouble.
A. in theory B. in favour
C. in particular D. in practice
The bell _______ the end of the period rang, interrupting our heated discussion.
A. to indicate B. indicating
C. indicates D. indicated
