As prepositional complementation, if the preposition is “for”, “there to be” should be used; and if the preposition is not “for”, “there being” should be used.

In the use of colors, the color may be used chiefly and other colors may be used supplementally,or balanced colors may be used.

As prepositional complementation, if the preposition is “for”, “there to be” should be used; and if the preposition is not “for”, “there being” should be used. A: 正确 B: 错误

This manual contains operating procedures of the most frequently used basic functions, allowing the machine to immediately be used.

In the use of colors, the( )color may be used chiefly and other colors may be used supplementally,or balanced colors may be used. A: black B: yellow C: blue D: green

翻译下面句子：1.Briefly，PLC is widely used. More than 200 enterprises develop about 300 PLCs to be used in automobile，chemical，industry，metallurgy，pulp papermaking etc.

(When used. as food (additives), antioxidants prevent fats and oils from (become. rancid when exposed to air, (and thus) extend their shelf life. A: When used B: additives C: become D: and thus

is the most commonly used.

Renewable ____________ of energy must be used.

In academic writing __________ are often used.