_________ difficult and challenging the task may be, we must finish it on time, because there is a possibility _________we’ll be fired if we can’t fulfill the task on time．

I don't believe we've met before,      I must say you do look familiar.

Children in that kindergarten are sometimes asked to sit on their hands            ______listening to the teacher.

I was about to tell him the secret    __someone patted me on the shoulder.

Keep on trying,         you will find a way out.

The police officers in our city work hard ______ the rest of us can live a safe life.

There is clear evidence ______ the most difficult feeling of all to interpret is bodily pain.

One Friday, we were packing to leave for a weekend away ______my daughter heard cries for help.

People in Tianjin are proud of ______ they have achieved in the past few years.

There were dirty marks on her trousers _______ she had wiped her hands.