The police set about arresting the suspect ______ they found enough evidence to prove him guilty.
--- Tony, may I borrow your car this afternoon?--- Sorry. _______.
_______ seems that most endangered species of wildlife are under protection.
The album _______ twelve songs in all, five classic songs _______.
With more and more birds _______, some day some species will _______ completely. In addition, some of them have _______ environmental pollution.
His test results are not very consistent. He does well __________week and badly the next.