School was over. Usually David's mother would take him home from school but today she was not here. David decided to go home alone {#blank#}1{#/blank#} foot, and it took him about half {#blank#}2{#/blank#} hour. When he got home, he couldn't get in {#blank#}3{#/blank#}he did not bring his keys. He knocked on the door, but no one answered. David thought his mother {#blank#}4{#/blank#}(be) in the toilet, so he waited patiently for her. After a few {#blank#}5{#/blank#} (minute), David knocked again, but still no one answered. "What is happening? Is there anything wrong with my mother?" he thought to {#blank#}6{#/blank#}(he) and got worried. Just at that moment, he heard the {#blank#}7{#/blank#}(friend) voice of his neighbour, John. David told him that no one was at home, and John asked him {#blank#}8{#/blank#}(stay) in his house. Two hours later, when David's mother got back, he {#blank#}9{#/blank#}(play) games with John. {#blank#}10{#/blank#} happy he was to see his mother！