Eggs, meat, vegetables and other foods can easily be poisoned by microorganisms such as ______.
| A．phenomena | B．dilemma | C．diploma | D．bacteria |
_______ a cold morning, I opened the window and was glad to find that It was snowing
outside.
| A．By | B． In | C．At | D．On |
The world ______. Things never stay the same.
| A．changes | B．is changing | C．was changing | D．will change |
The bottle is empty. Who ______the juice?
| A．has drunk | B．drinks | C．drank | D．is drinking |
I won’t go to the concert because I ______my ticket.
| A．lost | B．don’t lose | C．will lose | D．have lost |
----Hi, Carol, how was your trip to Disney World?
----Hi, we ______a good time there.
| A．are having | B．have had | C．had | D．have |