These plastic flowers look so _____ that many people think they are real.
| A．beautiful | B．natural | C．artificial | D．similar |
-----Oh, it’s you. I _____ you.
-----I’ve just have my hair cut and I’m wearing sun glasses.
| A．didn’t recognize | B．hadn’t recognized | C．haven’t recognized | D．don’t recognize |
Mrs. Smith has three sons, two _____ have gone to college.
| A．of them | B．of whom | C．of who | D．of which |
If you don’t go swimming this afternoon, she won’t go. _____.
| A．Nor shall I | B．Neither do I | C．So shall I | D．I do neither |
When we got to the airport, the plane was starting _____.
| A．taking off | B．to take off | C．take off | D．to taking off |
The river _____ are covered with trees is very long.
| A．whose bank | B．of which banks | C．whose the banks | D．the banks of which |