—When did your uncle arrive       China?

—He got to Guangzhou       the morning of the 16th of April.

—When did your uncle arrive ____ China?
—He got to Guangzhou   ____ the morning of the 16th of April

1. A.
   at; in
2. B.
   in; in
3. C.
   to; on
4. D.
   in; on

—When did your uncle arrive       China?

—He got to Guangzhou       the morning of the 16th of April.

A．at; in         B．in; in         C．to; on          D．in; on

—When did your uncle arrive ____ China?
—He got to Guangzhou   ____ the morning of the 16th of April.

— When did your uncle arrive in China?
— He got to Guangzhou          the morning of the 16th of April.

— When did your uncle arrive in China?

— He got to Guangzhou          the morning of the 16th of April.

A．in               B．at                C．on               D．for