Mark needs to learn Chinese ________ his company is opening a branch in Beijing.

Do you think he will do me a favor? — As far as I know, he is the last one to help others. He______be prepared to give you a hand, though.

He insisted that the problem discussed at the meeting ________ right away.

It’s my ___________ time to go to Beijing. I never went there before.

Teenagers ____ their health because they play computer games too much. [ ]