We're not very close friends we've known each other for a long time.( )
A.untilB.althoughC.asD.if
(2014)The earth will be more and more beautiful if everyone his best to love it.
--What's your brother? ---He's a teacher. He art at a school。
Daniel, _______the other boys in our class, _______playing football.
The buildings _______ your school _______ modern.
My mother _______at 8 a.m. ________every Monday morning.