After school, students often practise___________ ball games on the playground.
—What did you do last weekend?—On Saturday afternoon,I________soccer.
—Li Lei’s weekend?—It was pretty good.
Hundreds of students came to Shaoxing to work________the World Choir Games in 2010.
—When does your mother go shopping?—Usually________Sunday morning.
Studying in groups is necessary________you want to do well in school.