Keep up good state of mind even if you___________ fail plenty of times.
------ _______ the letter _______ to Mr Black? ----- No.It’s still on the desk.
------Why can she keep such a good figure? ------ She _________ great importance to regular exercise.
Safety in school has been of great concern because of frequent reports about accidents _______ students got injured or killed while in school.
In order to continue to learn by ourselves after leaving school, we must ______ learn how to study in the school now.
---- How long will it be ______ we know the result of the English examination?----- Perhaps in two or three days.