The Chinese University of Hong Kong, founded in 1963, ____ 50 in 2013．
A．turns B．becomes C．grows D．passes
My mother has two brothers, both of ____ graduating from Beijing University．
A．whom B．them C．which D．who
Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?
A．the; / B．a; / C．the; the D．a; the
—Shall I help you with the washing up?
— ．I'll do it later．
A．Of course B．Don't bother
C．That would be nice D．With pleasure
––What a journey! We’ve finally arrived!
––_____ an out-of-date train schedule, we would not have missed the train.
A．Had we not used B．Did we use
C．If we didn’t use D．If we had used
It was probably at that moment _____ I understood what kindness really was.
A．that B．when C．which D．what
