I.单项选择：（本大题包括20小题，每小题1分，共20分）
（ ）1．— _______ bike is this? — It’s_______.
A．What, me B．Whose, my C．Whose, mine D . Whose, I
（ ）2．Here _______ some crayons and an eraser for you.
A．is B．are C．be D. am
（ ）3．Her sister is careless(粗心). She often _______ things in the classroom after school.
A．loses B．forgets C．takes D. leaves
（ ）4．— Are you_______ your dog? —Yes, but I can’t_______ it.
A．look for, find B．find, look for C．looking for, find D. finding, look for
