— What happened to you on your way back to the hotel last night?—I lost my way in complete darkness and , things worse , it began to pour.
By the time you arrive in Liverpool, we ___________ in France for two weeks.
To maintain a nice relationship, both sides are advised to focus on _________ they have in common.
After the disaster, the first thing the local government did was to provide _____for the homeless families.
Most scientists seem to agree that ______ certain limit should be set on _______ consumption of cars to ease air pollution.
Helen devoted herself ________to her research and became a top scientist in the field of applied physics.