When we got there, he was about to leave. So he only had time to explain _______ to us how he ________ our plan.

We didn’t know you were in trouble at that time,_____ we would have given you a hand.

 The melon the Smiths served at dinner would have tasted __________ if it had been put in the fridge for a little while. 

As the idea of low-carbon life is now _____ accepted, more and more people travel by public transport.

 That night I felt especially lazy and went to bed ____ earlier than usual.