1. Doctor Watson …… me in many of my cases. (help) 2. This is very good that you …… , my dear Watson. (come)3. It’s clear

1. Doctor Watson helped me in many of my cases. 2. This is very good that you have come, my dear Watson. 3. It’s clear that he is a workman. 4. Your right hand is larger than your left one. You work with it, and so it is more developed. 5. I have studied tattoos: in fact, I am writing a book about them. 6. How do you know that I wrote a lot recently? 7. That means that your left arm and your right wrist have been rubbed on a desk.      1.Tom: Did you sunbathe? Mary: Don’t be silly! It has been raining all day! 2. Olga has collected badges since she left school. Now she has collected so many that she doesn’t know where to put them. 3. Steve has been a secretary for three years. Lately he was looking for a better post but so far he did not find anything4. You look tired. — Yes, I played tennis and I had not played for years. 5. Mrs. Jones has been living next door for quite a long time now but she has never said more than ‘Good morning’ to me.