15. When Madam Curie did the experiment again, she was more careful where she _____ a mistake.
| A．made | B．has made | C．was making | D．had made |
any TV report on places where there is a war, and you will see soldiers wearing blue berets.
| A．To watch | B．Watch |
| C．Having watched | D．Watching |
As far as I know, quite a few creatures in this film are not real at all, and a lot of ________ happens is imaginary.
| A．what | B．which |
| C．that | D．where |
-- Why were you not at the concert last night?
--- I ________ a close game between Seattle Sonnies and Miami Bucks.
| A．watched | B．was watching |
| C．have watched | D．had watched |
---Are you ready for Spain?
---Yes. I want the girls to experience that _______ they are young.
| A．while | B．until |
| C．if | D．before |
---Do you know where my blue coat is ?
---Don’t bother to look for it. I’m sure it willsome day.
| A．turn out | B．turn on |
| C．turn up | D．turn over |