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（1）David is (pass)the ball to Ben．
（2）I'm (pull)up carrots in the garden now．
（3）The g]asses (be)there a moment ago．
（4）I like (milk)cows on the fatal．That’s fun!
（5）一Did you (visit)the farm?
一Yes, I . I the farm．
（6）一What (do)you do last week?
—I (go)to the zoo with nay family．
（7）Look! The boys (pick)a lot of oranges，the girls (taste) them．
（8）We shouldn’t (walk)on the grass．
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
