ay dawned , the stars __________ ofsight.

In the experiment the scientist kept a watchful eye________the developments and recorded every detail

In the dream Peter saw himself ___ by a fierce wolf, and he woke suddenly with a start.

Do you think an advertisement is ______ help when you look for a new job—Well, it all depends. Anyway, it gives me more of ______ chance to try.

31 _______ with the present situation, the local government could not find effective measures to reduce the risk of coal mine accidents