41. When will they be able to contact with him?
→ Thì TLD: Wh- + will + S + V<infi>?
42. How many eggs did Mrs. Brown buy yesterday?
→ Thì QKD: How many/ much + N<số nhiều nếu là N đếm dk> + did + S + V<infi>?
43. Who have they offered shelter for?
→ Thì HTHT: Wh- + have/ has + S + PP?
44. How does she always feel when she meets him?
→ How: như thế nào
→ Thì HTD: Wh- + do/ does + S + V<infi>?
45. What do children drink everyday?
→ Milk mà sự vật nên dùng what
→ như câu 44