I.

66. d

67. g

68. a

69. f

70. e

71. c

72. b

II. 

1. Phong visited Ho Chi Minh City last month.

2. I usually go swimming in summer.

3. What the weather like in spring?

4. We visited Phu Quoc Island last weekend.

5. They are going to visit the National Park next weekend.

6. Where did you go yesterday?

#xinhaynhat

dgafec

1. Phong visited Ho Chi Minh city last month.

2. I usually go swimming in summer.

3. What's the weather like in spring?

4. We visited Phu Quoc Island last weekend.

5. They are going to visit the National Park next weekend.

6. Where did you go yesterday?