I go to school_________ 7 o’clock. A. on B. at C. in
Where ________ your father now?A.is B.are C.was
I can't ________ my key.A.look for B.find C.look
I was born ________ Beijing.A.at B.in C.on
When ________ your birthday?A.are B.was C.is
Where ________ you born?A.were B.are C.did