The scientist wrote down_____ series of things to do with______ nature, such as a blue sky.
A a, / B. a, the C. /, / D. /, the
____ again and again, the sayings have been learned by heart so far.
| A．Being practised | B．Having been practised |
| C．Practising | D．Having practised |
He was on the point of setting off for Shanghai ____ his girl friend called him.
| A．when | B．while | C．as | D．before |
My friend asked me to play ____ volleyball, but I’m tired and I don’t think I’ve got ____ energy.
| A．a ; / | B．the ; the | C．/ ; / | D．/ ; the |
The patient in hospital is ready to accept ____ help she can get.
| A．wherever | B．whatever | C．however | D．whenever |
I thought it of great necessity ____ your father’s advice into consideration.
| A．taken | B．taking | C．to take | D．took |