He __________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
He managed to make himself ___ in his ___ English.
To study biology has ___much of my spare time, but it has given me a lot of fun.
We had a good many anxious moments, but everything ___ fine in the end.
Can you spare me some paper? Mine ____.
Do you feel ___ a walk?