“Whatcoursesareyougoingtodonextsemester”
“Idon’tknow.Butit’sabouttime_____onsomething.”
Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
Nancywassurprisedthattheyhave（），Theyseemedtobeahappycouple.
Ininternationalmatches,prestigeissoimportantthattheonlythingthatmattersistoavoid_____.