—Simon, how old is your father this year?
—______. And we just had a special birthday party for his _____ birthday last Sunday.
A:Fortieth; forty
B:Forty; forty
C:Forty; fortieth
D:Fortieth; fortieth
关于人口增长的叙述,不正确的是 ( )
美国独立战争开始的标志是( )
当你询问对方是否喜欢熊猫时,应该问:( )