----May I come in and have a seat?
----______, make yourself comfortable.
| A．By no means | B．By any means | C．By all means | D．By this means |
Not until I had arrived home______ my appointment with Michael Smith.
| A．did I remember | B．that I remember | C．when I remember | D．had I remember |
______ lots of times, the song doesn’t sound as nice as before.
| A．Hearing | B．To hear | C．Having heard | D．Heard |
Bill Gates has created a wonderful “window”, ______ people can surf the Internet freely.
| A．that | B．which | C．where | D．when |
You will make some progress in your study of English ______ you keep more words in mind.
| A．as far as | B．as soon as | C．as well as | D．as long as |
--- Excuse me, I wonder if you can help. I have lost my ID card.
---- But where______ you______ it?
| A．did, lose | B．have, lost | C．had, lost | D．do, lose |