— Do you know anything about Chinese knots (中国结)?— Yes. They are usually seen symbols of good luck.
—Do you think the first problem in this math test difficult? —Yes.I could work it out.
—_____ good news he brought us yesterday! —Yes, all the students were very excited.
the students in this school is about four thousand,of them are boys.
—__________ do you have a test in school?—Every week.
I don’t know if mum a gift for me.If she one, I will be very happy.