Matching Pairs topics of englishOnline version resolver by SANTIAGO ESTRADA PICHARDO 1 Simple Past 2 Past Perfect 3 First Conditional 4 Past Perfect Continuous 5 Zero Conditional 6 Present Perfect Continuous 7 Present Perfect 8 Second Conditional 9 Third Conditional She had already eaten when I arrived. If it rains tomorrow, we will stay indoors. If I had known about the party, I would have gone. He has been studying for three hours. If I won the lottery, I would travel the world. They have lived in this city for five years. I visited my grandmother last weekend. They had been waiting for an hour before the bus arrived. If you heat water to 100 degrees Celsius, it boils