There is little variance in the first three days of Holy Week.
Gospel: Jn 12:1-36 [longer than the Roman pericope]
Epistle: Sap 2:12-22
Purifica nos misericors Deus: ut Ecclesiae tuae preces, quae tibi gratiae sunt, pia munera deferentes, fiant expiati mentibus gratiores.
Purify us merciful God, that the prayers of thy Church, which are beloved to thee, may be made expiatory by our offering of pious gifts with minds more pleasing to thee.