I.选择填空（20分）
( )1. _________ your hat?
A. Where B. Where're C. Where's D. Where are
( ) 2. Is his pencil case ____________ the schoolbag?
A. in B. at C. of D. to
( ) 3.Is my baseball _____ the chair? I can’t see it. – Yes, it’s there.
A. under B. for C. of D. on
