Whether eating out will cause certain cancers has remained ______; experts are still finding evidence to prove the truth.

Lingling got up early ____ she could catch the early bus.

he denied having seen my lost MP4, Ibelieve at least from nobody else can I get better source of information.

Are there any English story books for us students in the library—-There’re only a few, .

My mother opened the drawer to _____ the knives and spoons.