David went to buy some stationery souvenirs(纪念品) my cousin.
I do not doubt ________ win in the race.
My father _________ Beijing many times. He _________ there again last week.
— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.
She had great difficulty ________ the suitable food on the menu in that restaurant.
Being not far ________ the sea, London is famous ________ its fog.