C417

Ning Qing did not hear his eldest son's mutterings clearly. He dried the beans in the dustpan and asked: "What did you say just now?"

Xiangdang shook his head and changed the topic, "Mom, today, I met with some problems while studying the textbooks for the next semester." After thinking for a moment, he added, "It's about English."

"What problem?"

They were late at learning English