My father can play ________ violin well, but he can’t play ________ soccer.
---You should learn English by using it. ---What ____useful advice! Thank you very much.
-- I think students may bring iPad to school. --_________ This can cause some trouble.
--Hey, Joe, why not eat out to celebrate Mum’s birthday? She makes meals for us every day. -- _________
.--_________ will your parents come back to Shanghai? --Maybe in a month.
People _________ rivers for transportation since the beginning of history.