Complete this text using the verbs below. should (4) can (3) ought (1) have to (1) need (1) How to be a friend of the Earth. There are many simple things we ___ (1) all do to stop the destruction of the environment. First of all, we ___ (2) not dump our rubbish without thinking which things, such as bottles and paper, ___ (3) be recycled. We ___ (4) put objects that we ___ (5) recycle in recycling bins. Secondly, instead of taking our car wherever we go, we ___ (6) to leave it at home whenever possible, and go on foot or by public transport. If there is something wrong with our car’s exhaust pipe, we ___ (7) get it fixed immediately. When we ___ (8) to drive to the supermarket to do our shopping, we ___ (9) always remember to take our own bag, so that we don’t ___ (10) to use the supermarket’s plastic bags.