4. 听句子补全单词。
( ) 1. Put your book ______ your schoolbag.
A. in B. on
( ) 2. —Where is your book? —It’s on my ______.
A. desk B. chair
( ) 3. —What’s behind the door? —It’s a ______.
A. bed B. desk
( ) 4. I have a gift ______ you.
A. on B. for
( ) 5. Thank you, ______.
A. Mum B. Dad