Last year, my brother , who is a software developer, earned ______ my sister, a teacher in a senior middle school. A twice as many as B as many as twice C twice as much as D as much as twice
.______ the beginning of the 19th century did scientists know that all matter is made up of atoms.
Many people believe that _______ will takes years to develop a car that does not pollute the air.
They have been woking on this project for one month. It seems they need ________ month to finish it.
________your generous help, we could not be living a happy life today.
.After they were given several terrible blows, the enemy did not _____ out after dark.