Some aspects of a pilot's job      be boring, and pilots often      work at inconvenient hours．

--- _______ I come back before 6 o’clock?---No，you _______．But you _______ be back later than 7 o’clock．

On rainy days, accidents ______ happen sometimes on steep roads．

--How about the film last night?  ---We _________ expect a better one. This is the best one that has impressed us that much.

– Amazing! You _____ have won the first prize in the national English speech contest!– I’m lucky that all my efforts have finally paid off.