[ Grammar ]

It’s a difficult problem. It needs …….. about carefully.

A. think

B. to think

C. thinking

Select your answer:
A  B  C  D  E 


Random Topics:
Mixed General QuizPresent Perfect Continuous TenseToo / Very / So

Other quiz: Grammar

……………….. flowers are usually made of plastic or silk.

A. Unreal

B. FALSE

C. Artificial

D. Untrue


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