选出“乃”字作代词的一项（ ）
A：圣主乃吾辈所共事之主
B：至七月，乃扶病入觐
C：尔其无忘乃父之志
D：平明，汉军乃觉之，令骑将灌婴以五千骑追之
目前，澳大利亚新的支柱产业是
⑴Where is the eraser? ____
⑵Where are the crayons? ____
⑶Put your book on your desk. ____
A.OK!
B.It's under your pencil box.
C.They're in my hand.
