22. —Mr. Smith _____ in Russia for 10 years. —No wonder he can speak Russian fluently and now teaches Russian in a Chinese college.had stayed B. has stayed C. stayed D. stays
Mr Smith was so angry at all ________ Robert was doing _________ he walked out angrily.
By making friends with the native speakers, one can _________ a lot of their language.
The lecture that Mr Chen made this morning gave a strong ___________ on the students.
After the long journey, the Whites returned home, ___________.
Only when I made it to the train station _______ that I had left my ticket at home.