S$-1$Elements of a SentenceS$-1$a Subjects and PredicatesEXERCISE $1/$Identifying Subjects. Circle the letter that indicates the SUBJECT of the sentence.EXAMPLEThe term"fast food" first appeared in American English dictionaries in the $1950$s$\mathrm{.}1.$ Prepared and served more quickly than food in a regular restaurant, Fast food usually can be either taken out of the restaurant or eatenthere$\mathrm{.}2.$ There is debate over whether the term applies to hot dogs, falafel, noodles, and tacos when they are sold at stands or kiosks$\mathrm{.}3.$ Characteristics of fast$-$food restaurants include franchising, preparing food at a central facility and shipping it to outlets, and serving food in cartons, bags, or plastic wrap$\mathrm{.}4.$ One of the earliest American fast$-$food restaurants was White Castle, which began serving hamburgers in $1921\mathrm{.}5.$ Sometimes, fast food is referred to as convenience food$\mathrm{.}6.$ it is indeed convenient to rely on fast food.A$7.$ Eating fast food may not save consumers money, however, according$-$B$-$to some reports$\mathrm{.}8.$ In addition, both individuals and groups have long criticized fast$-$food chains.Note: Answers to even$-$numbered items can be found at the back of the book.