—You could always put the decision off a little bit longer. —_______If I leave it much longer I might miss my chance.
They use computers to keep the traffic smoothly.
All flights ________called off because of the terrible weather, they had to go there by train.
After the six-party talk in Beijing, an agreement was reached _________ that North Korea would abandon _________ nuclear weapons.
He never dreamt of _____for him to be sent abroad very soon.
Finally she got too tired and fell asleep at the desk, her right hand still ______ a pen.