As the most frequently spoken language in the world, Chinese ________ in many schools in Europe.A. is teaching B is taught C. has taught D. teaches
Jack said that he was sure of succeeding in passing the Totel Examination this time, _______, in my opinion, I don’t think so.
We must take measures to protect endangered wildlife _______ it is too late.
Listen!, his family must be quarreling, _______?
We read them ________; we remember them________.
Doctor Brown says that _______ what forceful arguments against cigarette harm there are, many people insist on smoking.