46. My sister looked after our children when we were away.
-My sister took
47. Minh last wrote to his pen pal five months ago
. - Minh hasn't
48. My father spent years building up his collection.
- It takes
49. They have just produced a new kind of plant.
A new kind
50. What a pity! Our teacher isn't here at the moment.
- I wish
51. Did your father watch a football match on TV last night?
- Your father
52. Mai is very sleepy. She tries to finish her homework.
Even though.
53. Study hard or you will fail in the next exams.
If .
54. May I borrow your smart phone?
Would you mind
55. "Will it rain tomorrow morning?", he asked his friend
. - He asked his friend...