【2015·重庆】We must find out ____ Karl is coming, so we can book a room for him.
The young teacher found it hard to _____ his explanation in class to most of the class.
—Tom, your lazy bone! You left the dishes unwashed again!—_______? Mom isn’t at home and she can’t hear you.
The driver was at _____ loss when ______ word came that he was forbidden to drive for speeding.
One of the most important things in education is to let students ____ positive emotions and experience in the process of their learning.
––– I felt left out at the party last night. ––– Really? ____, you should have said something.