1) My father open the door ............. the button a) touches b) by touching c) touch d) touched 2) How did you do it ? a) I unlocked it by putting the password b) I unlock it by putting the password c) I unlock it putting the password d) I unlocked it putting the password 3) He can take photos ............. a) by using a camera b) use a camera c) by a camera d) used to a camera 4) How do you open it? a) I opened it using this lever b) I open it by using this lever c) I open it use this lever d) I opened it use this lever

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