根据中文提示，用词组的适当形式填空。

1. Please ___________ ___________ (关掉) the radio. It's too loud.

2. I'm glad you have arrived ____________ ____________(准时) —the dinner is ready. 

3. This old photo ____________ me ___________(使…想起) my happy childhood.

4. —You look tired. What happened?   —I ___________ __________ (熬夜) late last night.

5. I've _________ ________ (赠送) some clothes to charity because they are too small for me. 

青藏车制动管路各管中，不允许混有非不锈钢材质的管及管件。