--- Where is your mother?--- She _______ to Sichuan on business. She has ______ there four times recently.
I will never forget the days __ we spent together in Hangzhou last year.
--What do you think of “Gangnam Style”?--1 think it wonderful .
--Can I come this afternoon or tomorrow morning?-- is OK.I’m free today and tomorrow.
English well, one must have a lot of practice.
-- do you call your parents ?-- Five minutes each time.