---What do you think of the film?
---Cool! Never before _____ a better one.
| A．had I seen | B．I have seen | C．have I seen | D．I had seen |
I hate _____ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |
Many of them turned a deaf ear to his advice, _______ they knew it to be valuable.
| A．as if | B．even though | C．now that | D．so that |
Helen ______ her keys in the office so she had to wait until her husband ______ home.
| A．has left; comes | B．left; had come |
| C．had left; came | D．had left; would come |
The teacher, with 6 girls and 8 boys of her class, ______ visiting a museum when the earthquake struck.
| A．would be | B．were | C．had been | D．was |
With a lot of difficult problems ______, the newly-elected president is having a hard time.
| A．settled | B．settling | C．to settle | D．being settled |