--- Has Li Lei finished his work today?--- I have no idea, but he ______ it when I saw him this morning.
Nowadays more young people have suffered from diabetes __________ it is generally realized.
The man didn’t know _________ the thief broke into the house and stole all his valuable things
There ________ no water for 2 days, the travellers were all thirsty.
Her father told her to be careful when _____ the street.
Hardly ________ home when he was asked to go back to work.