He is ______as a leader but he hasn’t__________ in teaching.

. A(n) _____ of achievement clearly has an influence on children’s early education.

The scientific research on how to protect the rare animals is ________. Many scientists are working hard to find new way to raise the animals by man.

In the _______ of proof, the police could not take action against the man.

--- How do I take this medicine? --- Well, look at the _______.