—Have you been to the Great Wall?
—Perhaps not in my memory. ________, it might have been during my early childhood.

The question that puzzled them is ____ they can get rid of the air pollution in the area.

______, I believe, and you will find Tom is very outgoing.

Don’t be discouraged. ____ things as they are and you will enjoy every day of your life.

When ____ help, you should say “thank you.” or “It is kind of you”.

It was not just the size of the party last night but ________ it meant to our company________ made it unique.

We hardly believe the news is true,________

Not until the heavy snow blocked the express ____ how serious the weather was.

______ disappointed us most was that the guide was always asking us to leave ____ we thought very interesting.

Jenny is always absent from school, ______ I suppose is why she is criticized now and then.