Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply.
| A．when | B．that | C．so that | D．Where |
By no means true that all native speakers of English know their own language very well．
| A．is that | B．that is | C．is it | D．it is |
In ______ eyes of my parents, a knowledge of English is ______ must in the world today.
| A．the;不填 | B．the; a | C．不填; a | D．不填;不填 |
--Spacecraft "Discovery" has failed in the course of launch.
--_____? They have been preparing for the test.
| A．How come? | B．When | C．What for | D．Why not |
Every time_____they met, they would talk several hours together about all of the situations_____ appear in the working world.
| A．that; when | B．when; where | C．which;what | D．/; that |
It_____we had stayed together for several weeks_____ I found we had a lot in common.
| A．was until; when | B．wasn’t until ; that |
| C．wasn’t until; when | D．was until; that |