— Do you usually get up early?
— Yes, but ________ Sunday, I get up ________ eight o'clock.
A.on; on B.at; at C.on; at
When you feel helpless and ________, just remember you are not ________ in the world because your friends are around you.
A.alone; alone B.alone; lonely C.lonely; alone
The students in this school plant ________ trees every year.
A.hundreds of B.five hundred of C.hundred of
Mom won’t let Dick go out ________ he promises to be back by 10:00 tonight.
A.if B.when C.unless
— ________of them knows the answer. What can we do now?
— Let’s ask a third boy for help.
A.Both B.Either C.Neither
Do you know ________ man, whose son is ________ astronaut?
A.the; an B.a; an C./; the
