You must attend the meeting ____ at ten o’clock, as it is scheduled—not a minute early or late．

---- You don’t go to that supermarket quite often, do you?  ---- No, I only go there ______ because it’s too far away from my house.

Some people either _____ avoid questions of right and wrong or remain neutral about them.

The earthquake damaged many houses and bridges; ______, it caused over 2,300 deaths. 

Progress so far has been very good . _______ ,we are sure that the project will becompleted on time.