----Look at that pretty girl! Do you know _____?

----She is a dancer.

A. who she is　 B. who is she　 C. what she is　 D. what is she

I can’t remember _____ I put the book, and I need it for my homework now.

A. where         B. how        C. what         D. why

I didn’t know  __________.

       A how they called these birds       B what they called these birds

       C what his decision is             D how to do with the bad milk

— ________ did you last see him?

   — Two weeks ago.

A. How          B. Where        C. What         D. When

We’ll plant trees tomorrow, and I don’t know        Tom will come and join us.

A. if                B. which              C. what                 D. where