—Were you worried about your daughter last night?
—Yes. It was __________.
| A．until she returned that I went to bed |
| B．until she returned when I slept well |
| C．not until she returned that I went to bed |
| D．not until she returned when I slept well |
_____ basic first-aid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known |
| C．Knowing | D．Being known |
I’m calling about the apartment you ______ the other day. Could you tell me more about it?
| A．advertised | B．had advertised |
| C．are advertising | D．will advertise |
It was playing computer games _____ cost the boy plenty of time _______ he ought to have spent doing his lessons.
| A．what; that | B．that; when |
| C．which; that | D．that; that |
David is ______ animal fur, so he won’t visit anyone who has cats or dogs in the house.
| A．curious about | B．allergic to |
| C．satisfied with | D．fond of |
John invited about 40 people to his wedding, most of ______ are family members.
| A．them | B．that | C．which | D．Whom |