Boys and girls usually _____ and play tricks on each other on that day.
—Can you play ping-pong _____ basketball?—I can play ping-pong.
—Lucy, tomorrow is October 1st. I’m going to Kunming for the holidays(假日).—_____
—Could you ride a bike when you were 5 years old?—_____
What present did you give Carl _____ his birthday?
— _____ is your teacher’s desk?—It’s about 140 centimeters long.