Questões de Concurso Comentadas por alunos sobre palavras conectivas | connective words em inglês

The phrase that replaces “meanwhile" in “Meanwhile, the teacher becomes an adviser" (lines 31 and 32) without change in meaning is

The underlined expression in “as well as learning how to find" (line 30) introduces a(n) 

The word “thus" in “thus yields effective learning" (lines 19 and 20) can be replaced by

In the fragment of the text “Hence, the efficient allocation of economic resources” (lines 18-19), the connector Hence conveys an idea of

Design Patterns
A design pattern is often posed as a question: how do we solve some design problem? However a design problem is, by its nature, nonspecific, and rarely has a single straight-forward answer. There might be several ways to solve the same problem, some better than others depending on the specific situation and the specific context of the problem. A design pattern is intended to share not just solutions but a better understanding of both the problem and how it might be solved. Firstly, patterns have a well-defined structure. This consistent layout makes it easy to browse through a collection of patterns to find relevant help and then dive further into the material. The structure encourages the author of the pattern to think carefully about the knowledge they're sharing, whilst making the material more consistently accessible to a reader.
(http://www.cambridgesemantics.com/semantic-university/semantic-web-design-patterns)
Na frase: “However a design problem is, by its nature, nonspecific…”, a palavra sublinhada pode ser substituída sem a perda do significado original da frase por: