6. We haven't seen each other for _______, though we are in the same city.
Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out ________ all the excitement is about.
Though _______ with the present situation, the local government could not find effective measures to reduce the risk of coal mine accidents.
Bill’s aim is to inform the viewers that cigarette advertisements on TV are illegal, _______?
—How much do you know about the 3D film technology? —A little. Not until _______the hot movie Avatar _______ some about it.
--- Hurry up! Alice and Sue are waiting for you at the school gate. --- Oh! I thought they ______ without me.