When the teacher came in, the students pretended_______ the text.
The students entered the classroom, smiling and ___, and ___ down to have their lessons.
You’d better take some medicine with you before you leave ______ someone gets sick.
Brussels, the capital of Belgium, is ______ home to the European Union, ______ organization of European nations.
Among all the DVDs ______ the Sound of Music, ______ you are looking forward to.
--- Why haven’t you asked Lisa to come here?--- She was writing a paper when I found her and she ______ it.