Past+Perfect

1. I **// became / had become //** interested in science after I // **visited / had visited** // the Science Museum in London. 2. When Krysta **// invented / had invented //** the waterbike she // **was / had been** // ill for a long time. 3. Simon **// played / had played //** the piano for ages when he // **gave / had given** // his first concert. 4. I **// didn’t know / hadn’t known //** the answer because I // **missed / had missed** // the lesson. 5. We **// arrived / had arrived //** ten minutes late, but they // **already left / had already left** //. 6. She **// missed / had missed //** the plane because her alarm clock // **didn’t go off / hadn’t gone** //// **off** //. 7. I **// knew / had known //** I **// met / had met //** her before, but I couldn’t remember where. || ** B. Complete each sentence with the correct form ** 1. He couldn’t get into the house because he _ (**forget)** his keys. 2. When he _ **(write)** all his postcards, he had to buy more stamps. 3. He remembered the story very well because he **(read)** the book several times. 4. By the time he **(finish)** his studies he wanted a holiday. 5. When I got home I discovered I _ **(lose)** my keys. 6. Ryan Patterson came up with his idea after he _ **(visit**) a fast food restaurant. 7. He was very hungry because he **(not eat)** since breakfast. || **** correct sentences. ** 1. He won lots of awards by the time he was 16. 2. I’m sorry, I tried to phone but you already left. 3. By the time he was 14 he had already wrote his first book. 4. He had knew where to go because he had been there before. 5. She became famous she had made her first invention. ||  ||
 * ** A. Choose the correct verb form in each sentence. **
 * of the verb in brackets. **
 * C. Each sentence has one mistake. Write the
 * C. Each sentence has one mistake. Write the