He usually goes to school ____ bike, but sometimes he _____a taxi to school.

______ to the climate here, the oldcouple would rather live here for the rest of their life _____move toanother city.

He devoted his whole life ________ animals in danger.

Are you finishing your task—________ We need no less than three hours more

Many people spoke highly of the plan at the meeting, but _______ I don’t think it is of much practical use.