The answer is:
- The little girl and her older sister opened their presents with great enthusiasm. SIMPLE
- Even though they were both very tired from their long trip, Elizabeth worked in the garden and Arthur cut the grass. COMPOUND-COMPLEX
- Grandmother carefully arranged her best china, crystal, silver, and linen on the large dining room table, and Grandfather rounded up enough chairs for all the guests to sit on. COMPOUND
- The waiter explained that the soup was prepared from seven vegetables from the restaurant’s garden. COMPLEX
- I said that I was tired. COMPLEX
- With great enthusiasm and with the usual curiosity of a small child, the little boy from the south of France devoured the five pastries in the display case and then asked for more. COMPOUND
- At this time of year in this part of the world, the nights are long, but the nights in your part of the world are longer. COMPOUND
- Because the builder wasn’t an expert in construction, he produced a poor house, and the owners had to make frequent repairs. COMPOUND-COMPLEX
- I acted my part in the play in a sincere manner and accepted with pleasure the enthusiastic applause of the several thousand spectators in the auditorium. COMPOUND
- The car that you bought is beautiful. COMPLEX
Simple sentences consist of one single clause (with a subject and a verb). Compound sentences have two independent clauses joined by a coordinating conjunction such as and, but, and or. Complex sentences contain one independent clause and at least one subordinate clause linked by a subordinating conjunction (for example, that, although and when). Finally, compound-complex sentences have at least two independent clauses plus a dependent clause.