It was several years I finally realized David had lied to me.
| A．when; that | B．that; when | C．before; that | D．until; why |
The warning we were given as children ________ eating fast will make you fat, may in fact, have a scientific explanation.
| A．that | B．who |
| C．where | D．which |
Although Anne is happy with her success, she wonders ________ will happen to her private life.
| A．that | B．this |
| C．it | D．what |
________ there are living creatures in the outer space as those on Earth hasn't been proved until now.
| A．How | B．When |
| C．Where | D．Whether |
We haven't settled the problem of ________ it is necessary for him to study abroad.
| A．why | B．whether |
| C．what | D．how |
It surprised us all ________ Kate made such big progress in this final exam.
| A．when | B．that |
| C．how | D．whether |