Unless________ to speak, you should remain silent at the meeting.
| A．invited | B．inviting |
| C．being invited | D．having invited |
------ Can I help you?
-------- No, thank you. I __________ now.
| A．have been served | B．have served | C．am being served | D．am serving |
There are a few grammatical errors in her essay, but ________ it is a good one.
| A．all in all | B．as a result | C．in detail | D．in other words |
Only then ______ how much damage had been caused.
| A．had she realized | B．she realized | C．did she realize | D．she had realized |
Though we spent a lot, we think it _____ because we succeeded in the end.
| A．worth | B．worth being spent | C．worthy of | D．worthwhile |
The flowers ______ my mother, but my sister thought they were for her and took them.
| A．were intended for | B．intended for | C．intended to give | D．intended giving |