Could I use your eraser for a while?__________,but I have to

Excuse me,but could I use your mobile phone for a while?__.I Could I have your eraser for a moment?(做肯定回答) Could I use your pen for a while?oF Course,you___. can I use your umbrella for a while ? I have __mine Could I please use your ruler __________. could i use your computer?no,you---.i have to---it.A couldn' Could i use your car?_________ .I have to go out.A NO,you ca can i use your dictionary for a while? Can I ()(use)your eraser? 英语问题【口语应用】——Could I use your dictionary for a while?——______ Could I use your computer for a few moments,please? Could I use your dictionary for a moment?