A new technique ____ out, the yields (收成) increased by 20% .
| A．having working | B．having been working |
| C．has worked | D．had been worked |
It was in New Zealand ______ Elizabeth first met Mr.Smith.
| A．that | B．how | C．which | D．when |
Autumn coming, the leaves have ________turned into brown color.
| A．frequently | B．gradually | C．exactly | D．regularly |
catch the first bus, he got up very early this morning.
| A．In order to | B．In order that | C．So as to | D．So that |
There was ______ time when everything to do with ______ nature could keep Anne spellbound.
| A．a; the | B．the; a | C．a; \ | D．the; the |
Put the books back they belong after you have finished them.
| A．where | B．to where | C．to which | D．to the place |