--Why are the windows so dirty?--Because we_________them for a long time.A. have cleaned B. haven't cleaned C. didn't clean
--- When is ______ birthday? --- His birthday is ______ August.
--- What about ______ bread? --- OK.
I don’t eat ice-cream. I don’t want ______.
--- ______ your cousin like milk? --- Yes, he likes ______ very much.
______ are my pencils. ______ pencils are in the schoolbag.