To mark its one hundredth anniversary, the university held a series of activities includin

When in doubt, it’s best to delete or if appropriate, mark as junk item. {A、B、C}A. 当

______ is known to the world, Mark Twain is a great American writer.A．WhoB．WhichC．AsD．It

No one in one hundred children exposed to the disease______likely to develop it.A．isB．areC

It is the mark of an educated mind to rest______with the degree of precision which the nat

Samuel Clemens ________ as Mark Twain was one of the most famous American writers.A.to k

Samuel Clemens _______ as Mark Twain was one of the most famous American writer.A.to knowB.to be k