The expensive treatment had been well researched; however, .......... ...

★ Adverbial Clause

The expensive treatment had been well researched; however, ……….

A. It made the patient feel well

B. It didn’t cause discomfort

C. It was not very effective

D. It could comport the patient

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Living alone can be difficult …………. many single people prefer live with their family.

A. nevertheless

B. moreover

C. therefore

D. otherwise