A

1) If we meet at 9:30, we....will have.......(to have) plenty of time. 2) Lisa would find the milk if she........looked...(to look) in the fridge. 3) The zookeeper would have punished her with a fine if she......had fed.....(to feed) the animals. 4) If you spoke louder, your classmates...would understand........(to understand) you. 5) Dan.....would arrive......(to arrive) safe if he drove slowly. 6) You......would have had.....(to have) no trouble at school if you had done your homework. 7) If you...... swim.....(to swim) in this lake, you'll shiver from cold. 8) The door will unlock if you...... press.....(to press) the green button. 9) If Mel......had asked.....(to ask) her teacher, he'd have answered her questions. 10) I...would call........(to call) the office if I was/were you.

Tìm các cặp số tự nhiên (x;y) sao cho: 2^x+2019=|y-2020|+y-2020

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Tìm các cặp số tự nhiên (x;y) sao cho: 2^x+2019=|y-2020|+y-2020

A

Tìm các cặp số tự nhiên (x;y) sao cho: 2^x+2019=|y-2020|+y-2020