【题目】The birds ________ watching us. ( )

【题目】He can _____________ that. ( )

【题目】连词成句：falling, the, down, apples, are, stairs, the (.)

【题目】连词成句：are, in, the, tree, birds, the, singing (.)

【题目】I can carry this bag.（改为否定句）

【题目】Let’s ________ in the window. ( )

【题目】He is one ________ old. ( )

【题目】How old ________ she? ( )

【题目】Tom and Mary ________ the park in Beijing. ( )

【题目】Her mother is at the supermarket.（对画线部分提问）