1. Prepare pasta according to package directions.
2. Heat oil in a saucepan.
3. Add garlic and basil and cook, stirring frequently, 1 minute.
4. Add clam juice and red-pepper flakes; bring to a boil.
5. Reduce heat. Add clams and lemon juice; simmer 5 minutes.
6. Toss sauce with linguine and parsley; top each serving with cheese.