1.He __________(work) in that hospital four years ago.
2.Why __________ your brother __________(cry) last night?
3.I __________(see) him yesterday.
4.He __________(come) to school at 6 o’clock this morning.
5.The boy __________(have) a bad cold yesterday.
6.When __________ you __________(buy) that house?
7.He __________(tell) a story to his daughter yesterday.
8.__________ you __________(try) to call me last night?
9.What __________you __________(buy) in the shop?
10. I __________(buy) a coat just now.
11.She __________(paint) the wall last month.
12.My mother __________(be) a worker 20 years ago.
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同类型试题
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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
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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
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