_____ he is very tired, _____ he still goes on working.
A.Although, but B.But,Although C.Although, /
－Who is your sister ?
－The girl _________ is in a pink dress．
A．who B．which C．whose
--Don't ______ too late, or you will feel tired in class.
--I won't, Dad. Good night!
A. stay up B. get up C. wake up
—Which language ______by the largest number of people in the world now？
—Chinese.
A. is used B. used C. is using
_____ the population of the U.S.A. in 2005?
—It was about 296 million.
A. What is B. What was C. How many was
—Tony，don’t draw on the wall．It isn’t a good behavior．
—_______________.
A．Never mind．
B．No problem．
C．Sorry，I won’t．
