In my home breakfast is ______ at 7 o’clock, which has ______ unchanged for 20 years.

―Where is Marry―She ____________to the library.

Our physics teacher told us that the earth _______ around the sun.

I don’t know the reason _______ you were absent from the meeting, and I am not sure that someone will tell me the reason _______ you haven’t told me.

Tom is the only one of the students in our school who_____late this morning. 