—Did any signs come up before the earthquake?
—Yes. Unusual things all those days. For example, a number of animals got out their homes.
| A．happening | B．were happening | C．has happened | D．had happened |
______ to work overtime that evening, I missed a wonderful film.
| A．Having been asked | B．To ask |
| C．Having asked | D．To be asked |
Without worrying about anything, she abandoned herself ________ a life of pleasure.
| A．with | B．of | C．to | D．on |
Jenny hopes that Mr. Smith will suggest a good way to have her written English ______ in a short period.
| A．improved | B．improving | C．to improve | D．improve |
You see, she’s losing her temper now. Let’s ______ her ________.
| A．leave; alone | B．leave; out | C．leave; off | D．leave; for |
This machine is very easy _______. Anybody can learn to use it in a few minutes.
| A．operating | B．to be operating | C．operated | D．to operate |