Grammar Quiz 29 1. The situation is very _____. worry worries worried worrying 2. Let the travel agent _____ about the details. worry worries worried worrying 3. His mother's health is a constant source of _____. worry worries worried worrying 4. We've been _____ sick about you. worry worries worried worrying 5. It _____ me that he hasn't called yet. is worry worries worried worrying Time's up Grammar Course EnglishFest Daily Grammar Quizzes Other Quizzes
