The following are all traffic signs except .
-- I called you this morning, but nobody answered.-- Sorry. I ________ the flowers in the garden.
-- What cold weather it is!--The radio says it will be even ________ tomorrow. Remember to put on more clothes.
-- ________ do you study for a test?-- By listening to the English programs every day.
-- I want to buy a ticket of the film Transformers. Do you know its ________?-- I am not sure. Maybe it’s 100 yuan.
--Do you know when the London 2012 Olympic Games will start?--It will start ________ July 27th, 2012. You can visit London that summer.