Complete the following sentences using appropriate simple present or present continuous form. Answers Planting trees is a very good idea because trees produce oxygen. He… Continue reading

We can use several different grammatical structures to show the reason for something. For example, we can express that idea using the coordinating conjunction for.… Continue reading

Complete the following sentences using an appropriate auxiliary verb form. Answers You have been riding non-stop for hours. You must be very tired. She looks… Continue reading

Complete the following sentences using appropriate conjunctions. Answers She was late, so we went without her. As I fired at the tiger, he shook my… Continue reading