Điền từ thích hợp vào chỗ trống

1.Half way to the office Paul ( turn ) ............round and ( go ) .............back home because he ( forget ) ............to turn the gas off.   2.London ( change ) .............. a  lot since we first ( come ) ............. to live here .                                                                             3.While we ( talk ) ..................on the phone the children ( start )............foghting and ( break ) ...........a window                             4.He used to talk to us for hours about all the interesting things he ( do ) .............. in his lifre .                                                         5.You know she ( stand ) ...............looking at that picture for the last twenty minutes.                                                                     6.I ( spend ) ...............a lot of time travelling since I ( get )...............this new job .                                                                             7.When we ( be ) ............at school we all ( study ) ............Latin.                                                                                                       8.When I ( meet ) .............him, he ( work ) ...........as a waiter for a year .                                                                                         9.After he ( finish ) .............breakfast he ( sit ) .........down to write some  letters .                                                                            10.She ( have ) ...........a hard life , but she's always smiling.                                                                                                             11.I think Jim ( be ) ...........out of town .