Leave your key with your neighbor ________ you lock yourself out one day.
---Did you see who the driver was? ----No, so quickly ______ that I didn’t make out what his face was like。
Armed with the information you have gathered, you canpreparing your business plan.
______ he was at home, I would have phoned him then.
Helen looked at ______ finished report with ______ satisfaction.
Peter’s jacket looked just the same as Jack’s, but it cost _____ his.