Use the required active or passive form of the verbs in brackets. "Let's go and see what (to do) at our new house now",

Let\'s go and see what is being done at our new house now\", said Dorothy. The construction of a new house on the same street had been planned for several years. The contractor was at work only a few days. \"I\'m sure the whole cellar will have been dug by this afternoon and they will begin to put in the wall,\" continued Dorothy. As they approached the place which had been called \"our house lot\" for several months already, they saw that the gravel was being hauled to the top of the hill where the of sand and cement had been already unloaded and a small concrete mixer had been set up. Mr.Anderson, the contractor, bowed to them. \"All our preparations for mixing the concrete will have been finished by the end of this day and then we will start up the machine tomorrow,\" Mr, Anderson said.