Look at ___ducks over there. A. these B. those
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