---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing.
I don’t know _____ he will come tomorrow or not ,_______he comes , I’ll tell you.
--What are you doing here ? --We are _______a way to have a cheaper holiday .
--Did you see a girl in red pass by just now? --No , sir . I _______a magazine.
-- Why do you feel so unhappy? --Bad luck . When I arrived at the airport, my flight __________.
-----Did you have any problems in South Pole (南极) --Yes. ____________ fresh vegetables like tomatoes A. to findB. findC foundD. finding