—How do the boy and the girl go to school?—The boy often.________ his bicycle and the girl often ________ the train to school.
—What' the next step? —Oh,please put some meat between two________of bread.
Please________hot water into the blender.
—Will there be more tall buildings in 50 years?—________.
—________will your father come back,Tony? —In three days.
I'm sure that there____more trees in our country in the future.