—Must I turn off the gas after cooking ? --Of course . You can never be ___ careful with that.
| A．enough | B．too | C．so | D．very |
—Did you make sense of what the man said just now?
—No, his meaning didn’t . Would you explain it to me?
| A．get through | B．get off | C．get across | D．get out |
Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．
| A．program | B．guidance | C．command | D．ability |
—How about seeing the new comedy tonight?
— I don’t like drama．
| A．It's not my cup of tea． | B．How come? |
| C．I'm right with you on that． | D．That's a deal． |
These animals are all used to their environment,______, they have learned how to live successfully in their habitat．
| A．however | B．for instance | C．what’s more | D．or rather |
－ I came all the way to inform you of the time and place of the meeting.
－You could have __________ yourself the trouble by calling me.
| A．shared | B．spared | C．cost | D．removed |