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1．The boys like to listen to music when they do______________ (they) homework.
2．I usually______________(play) sports at 4： 30.
3．She often ______________ (go) shopping on the weekend.
4．We would brush our______________ (tooth) twice a day.
5．He is ______________ (write) a letter now.
6．I'm going to ______________ (visit) my grandparents tomorrow.
7．Janet______________ (get) up at 7: 30 a. m. every day, so she is always late for school.
8．I think the______________ (four) lesson is the most difficult in this book.
9．Look at the sign. The library is______________ ( close) from 1:00 p. m to 2:00 p. M.
10．We______________ (go) to a party last weekend.
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
