---John has got a very good job in the government.
--- _____ he looks so happy.
| A．No doubt | B．No wonder | C．That’s because | D．It’s natural |
—What are they up to？It’s so noisy.
—Some students________a party.
| A．have had | B．are having | C．had had | D．were having |
When he was a little boy，he ______ on the farm.
| A．used to working | B．used to work |
| C．got used to work | D．was used to work |
— Somebody has left the lab door open.
—Don't look at me.
| A．Dear me | B．Hi, there |
| C．Thank goodness | D．Come on |
_______ the two oceans the Pacific is ______ .
| A．In; the large | B．For; larger | C．Of; larger | D．Of, the larger |
—That must have been a terrifying experience.
—Yeah. I ________ in the damaged car, unable to move.
| A．was stuck | B．have been stuck |
| C．am stuck | D．had been stuck |