Scientists will have to___new approaches of increasing the world’s power supply.A.put up w

Apples investors believe that______.A．Apple"s new products will sell out by ChristmasB．App

Trade unions have criticized that the new force will worsen the relationship between______

If you cant afford a new car, you will have to go______.A．withB．withoutC．throughD．by

The scientists have absolute freedom as to what research they think is best to ______.A．pu

The contract will______at the end of the year. A new one will have to be drawn.A．run outB．

We thought the plants all died from lack of rain, and were delighted to see new______ appe