The shipping authorities followed the ________of the unidentified submarine on their radar screens.

单项选择题Oil sales volume in local urban and rural areas rose by 24% and 50% ________, over July 2006.

单项选择题We'll never get to the station on time we run as fast as we can.

单项选择题I don't believe in Brown's adventure at all. It sounds so___ .

单项选择题Does brain power_________ as we get older Scientists now have some surprising answers.

单项选择题I don't think__________ possible to master a foreign language without much memorywork.

单项选择题If I lose my new watch my parents will be very annoyed _____me.

单项选择题What' the main reason Democrats could regain control of Congress after 12 years

单项选择题When did Ponti begin making films

单项选择题What will soon begin in the southern Senegalese towns

单项选择题What' the function of the new drug produced by Pfizer