用所给动词的适当形式填空。

1. My mother began_____ (light) the fire to cook the breakfast.

2. Have you_____ (feed) the animals on the farm?

3. I am going to get my computer_____(repair) the day after tomorrow.

4. My uncle has_____(go) to Beijing and he will be back in two days,

5. Mr. Smith has to raise his voice so as to make himself_____ (hear) by all of us.

药物经过4个半衰期, 体内累积蓄积量为

A．吸收
B．分布
C．代谢
D．排泄
E．转运