Active:Present Simple : We select all necessary materials every day. Past Simple : We selected all necessary materials yesterday. Future Simple : We will select all necessary materials tomorrow. Past Perfect : We had selected all necessary materials by 5 o'clock. Future Perfect : We will have selected all necessary materials by 7 o'clock tomorrow. Present Continous : We are selecting all necessary materials now.Past Continuous : We were selecting all necessary materials from 10 o'clock till 12 o'clock. Future Continous : We will be selecting all necessary materials at this time tomorrow. Passive: Present Simple: All necessary materials are selected .Past Simple : All necessary materials were selected. Future Simple : All necessary materials will be selected. Past Perfect : All necessary materials had been selected. Present Perfect All necessary materials have been selected. Future Perfect : All necessary materials will have been selected. Present Continous: All necessary materials are being selected.Past Continous : All necessary materials were being selected. Future Continous : -