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（1）A. I am visiting my grandparents.
B.I watched TV .
C. We go to the park .
（2）A .Yes , she is .
B. No, she didn't.
C .No , she wasn't .
（3）A. Yes , it is .
B. It was great fun .
C .It is great .
（4）A. In Shanghai.
B. In Nanjing.
C. In Beijing
（5）A. Because I wanted to give you a book.
B. That's great.
C. I want to go fishing.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
