The student ______ his homework and handed it to the teacher.
I find___________hard to learn English well.
--Mr.Black used to be a worker,_________?--Yes,he_______. Now he is a policeman.
–Could you please tell me__________?--He is under the big tree over there.
I like these photos and they can________me________the life living in America.
He wasn’t able to arrive on time__________the heavy snow.