Replace the underlined words with a body idiom. Use the clue in brackets at the end of the sentence:

This phone must be incredible expensive. (arm) This phone must .

I couldn't stop laughing when I saw his ridiculous moustaches. ( straight face) I couldn't when I saw his ridiculous moustaches.

He was getting pretty nervous about the interview next week. (feet) He about the interview next week.

I'm finding it difficult to understand the new confidentiality policy at work. (head) I'm finding it difficult the new confidentiality policy at work.

She easily controls her boyfriend. (thumb) Her boyfriend .

That's the best I can tell you without thinking too much. (head) That's the best I can tell you .