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 _________.

单项选择题She did not _________ staying at home as she had some sewing she wanted to do.

单项选择题If we wait until the landlord _________ to repair the roof we'll all die of exposure.

单项选择题The candidate arrived _________ at 8 o'clock for the job interview.

单项选择题The residents, _________ had been damaged by the flood, were given help by the Red Cross.