Completing all the homework by the dinner, John felt very tired. He __________all day long.
| A．was studying | B．studies | C．has studied | D．had been studying |
He is one of those students who, I am sure, always do ____ best.
| A．his | B．their | C．my | D．one's |
--- How did you pay these worker Well, as a rule they were paid _____.
| A．on the hour | B．by the hour | C．to the hour | D．with the hour |
I met the teacher in the street yesterday ____ taught me English three years ago.
| A．which | B．when | C．where | D．who |
It will be quite a long time _____ she is back again, so don't be too cross with her.
| A．that | B．since | C．before | D．until |
I often go to the English corner to have a free talk with my classmates ____ I am busy.
| A．except that | B．except for | C．except when | D．except |