Where is my bag?- is on the desk.A. ItB. TheyC. ItsD. Their

问题补充：

--- Where is my bag?

--- is on the desk.

A. It

B. They

C. Its

D. Their

答案：

(答案→)A. It

B. They

C. Its

D. Their

解析：It人称代词，它；They人称代词，他们；Its物主代词，它们的；Their物主代词，他们的。句意：我的包在哪儿？——在桌子上。结合语境可知下文代词指代的是上文提到的bag，单数名词，故用it，选A。