We are going to do some shopping. Willyou _ us? [ ]

Old people need special care in winter, as they are very______ to sudden change of the weather.

Where have you been these days—I have been to Bei Daihe with afriend .

下列各句中没有语病的一句是（ ）

__ to go on a diet, but the dishes at the partywere simply impossible to resist.