41. “When are you coming back?” I asked them 42. “Whose car did you borrow last night?” I said to him 43. “What’s your new house like?” I asked them 44. “What was she wearing when you saw her last?” the policeman asked me 45. “Why did you travel first class?” I asked him 46. “Who owns this gun?” the detective said to him. the detective asked 47. “When was the timetable changed?” he asked me 48. “Why has the 2.30 train been cancelled?” said Ann . 49. “When did you begin learning English?” he said to us 50. “Why do you think it may be dangerous?” he asked her

$\text{41.}$ I asked them when they were coming back.

$\text{→}$ HTTD ⇒ QKTD

$\text{→}$ you ⇒ they

$\text{42.}$ I asked him whose car he had borrowed the night before.

$\text{→}$ you ⇒ he

$\text{→}$ QKD ⇒ QKHT

$\text{→}$ last night ⇒ the night before

$\text{43.}$ I asked them what their new house was like.

$\text{→}$ your ⇒ their

$\text{→}$ is ⇒ was

$\text{44.}$ The police asked me what she had been wearing when I had seen her last.

$\text{→}$ QKTD ⇒ QKHTTD

$\text{→}$ QKD ⇒ QKHT

$\text{→}$ you ⇒ I

$\text{45.}$ I asked him why he had traveled first class.

$\text{→}$ you ⇒ he

$\text{→}$ QKD ⇒ QKHT

$\text{46.}$ The detective asked him who owned the gun.

$\text{→}$ HTD ⇒ QKD

$\text{→}$ this ⇒ the

$\text{47.}$ He asked me when the timetable had been changed.

$\text{→}$ Câu bị động thì QKD ⇒ thì QKHT

$\text{48.}$ Ann asked why the 2.30 train had been cancelled.

$\text{→}$ Câu bị động thì HTHT ⇒ thì QKHT

$\text{49.}$ He asked us when we had begun learning English.

$\text{→}$ you ⇒ we

$\text{→}$ QKD ⇒ QKHT

$\text{50.}$ He asked her why she thought it might be dangerous.

$\text{→}$ you ⇒ she

$\text{→}$ HTD ⇒ QKD

$\text{→}$ may ⇒ might