It is essential for students learners to know the distinction between as in thin [θ] and the [ð] and to speak them correctly for intelligle reasons.

The fact that every language has specific rules on how individual sounds can be combined is known as ___________________ 

It’s normally achievable for someone older than 16 to alter his/her pronunciation habits to sound exactly like a member of a new group

Any expert user of a language who is a “non-native teacher” can be as effective, or often more effective, than a native-speaker instructor. The difference is in the training or approach.

What mnemonic rule do these two linguistis propose to use?

It is essential to spend  as much time as necessary providing feedback to our students, particularly when they make a mistake

Pronunciation work is almost never about making people sound “native,” whatever that even means in today’s interconnected world

Do not get hung up on theoretical correctness or specific approaches and techniques. If an activity works for your group, fine. If not, that is also fine