When you’re learning to drive,_____ a good teacher makes a big difference.
Sales of CDs have greatly increased since the early 1990s, when people_____to enjoy the advantages of this new technology.
________ is often the case, we have worked out the production plan.
The____________house smells as if it hasn't been lived in for years.
The old man, ____________abroad for twenty years, is on the way back to his motherland.
A man is being questioned in relation to the ________ murder last night.