1.否定句：We don't have got a lot of sandwiches.
一般疑问句：Do we have got a lot of sandwiches?
对a lot of sandwiches提问: How many sandwiches do we have got?
2. 否定句：We don't have a lot of sandwiches.
一般疑问句：Do we have a lot of sandwiches?
对a lot of sandwiches提问: How many sandwiches do we have ?