This is _____ best kind of _____ pen you can get here.
As the busiest woman in Norton, she made ________ her duty to look after all the other people’s affairs in that town.
With so much homework to do, _________to play football.
_________ with the size of the whole earth, the biggest ocean does not seem big at all.
I recognized him_________ I saw him in the crowd.
—Li Ming went abroad in 2000. —No wonder. I ______ him ever since.