____ students should be given more free time is suggested by many experts and welcomed by kids in school.
| A．What | B．Why | C．Whether | D．That |
He wrote a letter ______ he explains what had happened in the accident.
| A．what | B．which | C．where | D．how |
Animals are obviously ______ lower form of life than _______ man.
| A．a ; / | B．the ; the | C．a ; the | D．/ ; / |
Shethe carpet with some very nice curtains in color.
| A． | connected | B． | fitted | C． | equipped | D． | matched. |
_______ one of you breaks the window will have to pay for it.
| A．Whoever | B．Whatever | C．Whichever | D．Wherever. |
She says that she’ll have to close the shop ________ business improves.
| A．if | B．unless | C．after | D．when |