单项选择题I remember _________ to help us if we ever got into trouble.

单项选择题Our company decided to _________ the contract because a number of the conditions in it had not been met.

单项选择题You can't afford to let the situation get worse. You must take _________ to put it fight.

单项选择题It was difficult for him to buy good shoes because he had such a big _________ of feet.

单项选择题We regret to inform you that the materials you ordered are _________.