we are laid off, all of us will have to be retrained and improve ourselves.
| A．Unless | B．So that | C．Until | D．In case |
I have heard from my father, is in American.
| A．which | B．that | C．from whom | D．who |
Swan Lake is a famous ballet(芭蕾) in four acts, ________ on a German fairy tale.
| A．basing | B．based | C．bases | D．to base |
He had no idea of how the climb would be _______ he was half way up the mountain.
| A．when | B．until | C．while | D．as |
—Would you like some more chicken?
—No, thanks. I am ______ a diet and try to ______weight.
| A．on; lose | B．on; put on | C．in; have | D．in; lose |
. Alien had to call a taxi because the box was _____ to carry all the way home.
| A．much too heavy | B．too much heavy |
| C．heavy too much | D．too heavy much |