---Excuse me. Where is your teachers’ office?---________, sir.---Thanks a lot.
I will _______ him when I _______free.
—What’s your friend like? —______________.He often helps others.
I often go to sleep ________10:00 p.m. ________7:00 a.m..
—Could you pass me the book? —______________.
Most students hope _______well in their study.