Complete the conversation with Was, Wasn't, were, weren't. (1) Were you at Charlotte's party last Suturday ?
Yes , I (2) was .
(3) it good ?
Well, it (4) OK .
(5) there meny people ?
Yes , there (6). Hundreds .
(7) Sophie there ?
No she (8). Why (9) You there ?
Well, I couldn't go to Charlotte's party becaus I (10) at Dave's party . It (11) great !
2 The magnitude of the force of attraction is expressed by the formula 2 F=k m1 m2\r, isn't it?
3 What does the law of equality of action and reaction mean?
4 Is the factor of proportionality numerically equal to the magnitude of the force of attraction of two particles with masses equal to unity and at a unit distance from one another?
5 Why is the centimeter-gram-second system of units not convenient for the study of the motion of astronomical bodies?
6 What theory shows how bodies of finite dimensions attract one another?
7 Where are formulas of potential theory applied?
What’s that dent in the side of the car? Have you had an accident?
I’m sorry, John’s not here; he has gone the dentist. He has been having trouble with a tooth.
This cassette recorder is broken. Have you been playing with it?
Your Italian is very good. Have you tudied it long?
Do you mind if I clear the table? Have you had enough to eat?
I’m not surprised he has failed that exam. He has not been working hard recently.
Oh no! The children have been cooking. Look at the state of this kitchen!
How many times has Wendy been late for work this week?
I’m going to give that cat some food. It has been sitting on the doorstep for hours. I’m sure it’s starving.
I have been doing grammar exercises all morning. I deserve a treat for lunch.
Haven't you bought your mother a present? That’s really mean of you!
I saw Katie yesterday. She has been working in Australia for the past year. Did you know?
Now where are my keys? This is the third time I have lost them today!
Have you ever played chess? You should try it. I’m sure it’s the sort of game you’d like.
Oh do be quiet. You have been grumbling all day!
Your tennis has really improved! Have you been practicing in secret?