（年北京市西城区高三5月二模试题）31. A person who has never tasted bitter won’t know ______ sweet is.
| A．which | B．what | C．when | D．why |
To tell _____ truth, it is ______ struggle for Jack to get ready in such a short time.
| A．the; real a | B．a; a real | C．the; really a | D．a, a really |
Low – carbon lifestyle is of great benefit to improve the world environment．can be enjoyed from it until you have a deep understanding of it, however．
| A．Something | B．Much | C．Few | D．Nothing |
It was reported that 115 minersin the flooded mine for eight days were pulled out afive at last．
| A．trapped | B．being trapped | C．were trapped | D．had trapped |
We wouldn’t go to Philippine for our vacationwe could afford it．
| A．as if | B．so that | C．now that | D．even if |
—Have you got any books on English grammar? I’d like to borrow．
—Yes, here you are．But you must return it by Friday．
| A．it | B．one | C．some | D．any |