The nutrients in ________ falls into the ocean quickly become available to other living things.
| A．what | B．that | C．whatever | D．which |
Some birds fly_______________in winter and some stay in the north.
| A．south | B．the south | C．in the south | D．to south |
The book,_______________as a surprise for his sister was lost in the mail.
| A．intended | B．to be intended | C．Intending | D．being intended |
The country life he was used to ______greatly since 1992.
| A．change | B．has changed | C．changing | D．have changed |
Nancy enjoyed herself so much _________she visited her friends in Sydney last year.
| A．that | B．which | C．when | D．where |
Great changes ________ in that school. It is no longer _______ it was 20 years ago.
| A．have taken place, that | B．have been taken place, what |
| C．have taken place, what | D．took place, the place what |