用括号内所给动词的适当形式填空。

1. Let's have a dictation (听写). ________ (take) out your exercise books.

2. After eating, I help my mom ________ (do)the dishes.

3. My brother often asks me ________ (sweep) the floor.

4. The computer programmer is going _______ (work) on a new program.

5. The girl is old enough _______ (make) her bed.

下列各组药物中。属于配伍禁忌的是（）

A．巴豆与牵牛

B．丁香与三棱

C．牙硝与郁金

D．官桂与五灵脂

E．人参与石脂