1、我此刻正在写信.1、I was writing a letter -----------

1、我此刻正在写信.1、I was writing a letter -----------
2、他们将会在一个星期内完成任务
2、They will———finish their work in a week
3.他随身带着照相机以便随时可以拍照
3.He carries his camera with him——he can takephotos at any time
根据中文给句子填空