PRESENT SIMPLE/SIMPLE FUTURE If you_(want) to travel long distances on your bicycle, you must learn how to mend a puncture. As soon as your tyre_(become) flat, get off the bike or you will_(damage) the wheel. Then turn the bicycle upside down. Once it_(be) in position, remove the tyre using levers or, if you_(have) nothing else, use spoons. When the tyre_(be) off, pump up the inner tube. Put it in some water and turn it until you _(see) bubbles coming from it. This your puncture. Before you_(apply) the patch, you must clean and dry the area around the hole. After_(put) glue around the hole and wait until it_(dry) a little. Then select a suitably sized patch. Stick the patch over the hole and don't forget to put some chalk over it. Unless you do this the inner tube_(stick) to the inside of the tyre. Replace the tube, pump up the tyre and ride away. I_(not/know) if you_(be able to remember all this, but it's worth trying because you never know when it_(be) useful to you. this you.