Every year ______ Mother’s Day is on ________ second Sunday in May.
_____ you tell me how to use this digital dictionary?
We _____ more than 1,200 English words already, do you know?
I went to Sanya with my family this summer and all of us _____ a good trip.
—Which subject is _____, Chinese or maths? —I think maths is.
—_____were you born, Peter? —I was born in 1998.