---Which star is _____from the earth, the moon, the sun or the Mars?---The moon, of course.
—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.
Half of the books ________easy for the students to read.