MCQ Practice English 📖 Choose the correct word for the gap in the sentence, 'My father insists on ---- quality materials for the construction of our... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousChoose the correct tense. NextChoose the right form of verb : It is high time we (act) on the matter.