______for the free tickets, I would not have gone to the films yesterday.
| A．If it is not | B．Were it not |
| C．Had it not been | D．If it were not |
Did ____ on time make her teacher angry？
| A．not to come | B．her not to come | C．her not coming | D．not her coming |
_______ is no need to worry if you have never skied before.
| A．It | B．That | C．There | D．This |
Life in the oceans _______ from the tiniest plankton all the way up to giants like sharks and whales.
| A．changes | B．ranges | C．remains | D．develops |
The motto for the scientific park makes _______ clear that science and business must work together to build the future.
| A．that | B．it | C．this | D．one |
This magazine is very _______ with young people, who like its content and style.
| A．familiar | B．popular | C．similar | D．particular |