Choose the correct answer: 1. Bobby began to work as soon as they (has left/ had left) 2. It is easy to find the type of machines. It (sell/ is sold/ sold) in a

Choose the correct answer:

1. Bobby began to work as soon as they (has left/ had left)
2. It is easy to find the type of machines. It (sell/ is sold/ sold) in almost every hardware store.
3. They (clean/ cleaned/ have cleaned) the workshop twice a day.
4. Five students were in laboratory. Three were assembling (another/ the other) was cleaning the tool kit, (the other/ others) was lubricating a wheel.
5. A knife (has/ had) a blade.
6. Did the (washed/ wash) the truck with gasoline?
7. A pair of glasses (were/ was) in the bag.
8. There (have/ has) been a number accident today.
9. Neither Bobby nor Tobby (make/ makes) bicycle everyday.
10. You may hurt (you/ your/ the) finger if you dont allow the instructions.
11. He finish the work in (eight/ eighth) days.
12. They bought a sparkling plug for (ourselves/ themselves).
13. The manager (was talking/ has talked) with the worker when I gave the letter to him.