The diesel truck chugged up the hill. It spewed out black smoke.(long sentence)

He went down to the lake to take pictures of the Canadian geese. It was raining and the geese had disappeared.(long sentence)

Read the following paragraph and underline the topic sentences.This group of students want beauty from sports. Boys want to become strong; girls want to be slim and graceful. Those who consider sports the only way of reducing weight also belong to this group. They are very careful in choosing the kind of exercise they do, and are afraid that certain sports may ruin their figures. Horizontal bars and parallel bars are the boys' choice, and the hula hoop is now the girls' favorite. The appropriate name for this group may be beauty oriented sports participants.

Read the following paragraph and underline the topic sentences.A mirror can often make a small room seem larger. A friend of mine has a living room that measures about eight feet by ten, but that looks twice that size, because one entire wall is covered with mirror tiles. The furniture and pictures in the rest of the room are reflected in the mirror wall, making it look like a large extension of the entire room. Using mirrors is an effective decorating technique.

Correct the errors in the following sentence.Mother told us on Friday to mow the lawn and trim the hedge.

Sears had the outdoor grill I wanted. The clerk wouldn't sell it to me. It was the food sample.（compound-complex sentence)

Cindy lay on the couch. She was exhausted from working all day.(long sentence)

Correct the errors in the following sentence.My favorite teacher, a native of Australia, and who is also our tennis coach, is moving to another city next semester.

Read the following paragraphs and cross out the irrelevant sentences.Pearls are gathered by men known as pearl divers. Actually, these men do not dive. They are lowered by a rope to the bottom of the sea. Many tourists to Japan enjoy shopping for cultured pearls. Pearl gatherers work in pairs, with one remaining at the surface to help the other return from his dive. An experienced pearl diver can stay down about a minute and a half and can often make as many as thirty dives in one day.

Correct the errors in the following sentence.Susan always has promoted women's rights and always will.