Ad = advert = advertisement
If (anything) leaves something to be desired, it does not meet your expectations… it is not as good as it should be. It’s a diplomatic way of saying that something was terrible.
1. Do you live in a city where you get great service in stores and restaurants, or does the customer service in your city leave something to be desired? Does good or bad service depend on someone’s level of education, or do you think it’s a cultural thing?
2. Have you ever watched a pirated movie that was filmed in the cinema? The image and audio quality leave a lot to be desired, so it’s not worth watching. It’s better to go to the cinema or wait for the DVD release.
2. Have you ever watched a pirated movie that was filmed in the cinema? The image and audio quality leave a lot to be desired, so it’s not worth watching. It’s better to go to the cinema or wait for the DVD release.
3. FIFA has said that Brazil’s preparation for the 2014 soccer world cup leaves much to be desired. They say that the progress with the construction of stadiums, transportation infrastructure and hotels is far behind schedule. FIFA general secretary Jerome Valcke was criticized for stating that Brazil needed a "kick up the backside" to get everything ready on time.
4. Did you ever study in an English course that left a lot to be desired? Was it the material or the teacher?