He plays soccer ________ seven ________ Saturday morning.A. in; at B. at; on C. at; in
_____ shouldn’t have part-time jobs because they are too young.
_____ lovely day!
All the new books _______ to the poor village next month.
No free plastic bag in the supermarket helps to _____ white pollution.
----- ________ the population of China? ---- It’s about 13,000,000.