Structure Skills 1-4 UC

A sentence should have

The decanting of red wines _____ a long tradition in high quality wine service and can be done to add a special flourish at a meal. What is missing?

The decanting of red wines _____ a long tradition in high quality wine service and can be done to add a special flourish at a meal.

----- are poor observers of their child's behavior so deviant behavior reaches unmanageable proportions. What is missing?

----- are poor observers of their child's behavior so deviant behavior reaches unmanageable proportions

For decades has been known serving up sugary or fat-laden products. This sentence is grammatically incorrect.

For decades ----- has been known serving up sugary or fat-laden products

We slowly and carefully because the snow was piling up on the road. The sentence is incorrect.

They ----- slowly and carefully because the snow was piling up on the road. What is missing?

They ----- slowly and carefully because the snow was piling up on the road.

Shierly, she is my lecturer, is also my best friend. This is not a good sentence because of