---- This place used to be full of trees, ___ it?---- Yes. But now it has turned into buildings.
--Do you know when the London 2012 Olympic Games will start?--It will start ________ July 27th, 2012. You can visit London that summer.
--Mum, where did you put my new sports shoes?--Oh, I put them in a box. And ________ box is under your desk.
---I’m going on a trip to Hongkong after the exam.---Really? ___________!
The following are all traffic signs except .
If it rain tomorrow,we’ll go on a trip.