_______, the disease will produce a kind of poison that will kill the patient.
| A．If it untreated | B．If is untreated |
| C．If being untreated | D．If untreated |
.
11. Tom wanted to play football after school, but Jack told him ______.
| A．not to | B．not to do | C．not do it | D．do not |
.
You can take as many as you can because they are free of ______.
| A．fare | B．charge | C．money | D．pay |
.
I don’t think ______ possible to master a foreign language without much memory work.
| A．that | B．which | C．it | D．this |
.
The singer became famous in the early 1980s, ______ the classical music was better than pop music.
| A．which | B．when | C．that | D．where |
.
---How long have you _______?
---5 years.
| A．married | B．got married | C．married | D．been married |