We had just covered half the journey________the engine failed and we could do nothing but wait for help.
_________working all day long, he fell asleep as soon as he lay on the bed.
The chair looks rather hard, but in fact it is very comfortable to _______.
---What were you doing when I phoned you? ---I had just finished my homework and ______ to take a bath.
You can not _____him _____a selfish man though he looks cold.
My sister ____a good chance to go abroad for further study of English.