----Has Mr lee arrived? ---No, but it is already 9 o’clock. He should ____at any time.
The government has _______ the parents to work with teachers in the education of their children.
The plan ______ just because people were unwilling to co-operate.
My study of biology has ______ much of my spare time, but it has given me a great deal of enjoyment.
Elephants would ______ if men were allowed to shoot as many as they wished.
. I had to ______ because someone else wanted to use the phone.