I don’t know the reason _______ you were absent from the meeting, and I am not sure whether someone will tell me the reason _______you haven’t told me.
Many people in China have never dreamed of ______ a chance for them to learn to drive after their retirement.
Tom pretended ______ it;but in fact,he knew it very well.
The country has acknowledged ______ every means to fight against any possible attack.
—What about saving the drowning boy from the other side of the river? —In my opinion,______.
______ two giraffes,Zheng He later brought zebras,shells,elephant ivory back to China after his voyages.