One of the problems with wind farms is that______

The process of urbanization has caused many problems, the major one is ______.A．economyB．t

One of the problems with wind farms is thatA．there is not enough wind.B．wind is not reliab

The author argues that dealing with the problem of pronunciation in the wrong way is _____

One of the problems with multiple authorship is that it is hard ______A．to allocate the re

In recent years a new farming revolution has begun, one that involves the 【B1】______ of li

When a spacecraft travels, one of the major problems is reentry into the Earth’s _______.A