30.31)couldn't sleep
2)couldn't eat
3)can't decide
4)couldn't find
5)couldn't go
____
30.2 2)can see
3)can't hear
4)can't find
5)could speak
______
30.4
You say to me: Could you pass me the salt, please?
Could you turn off the radio, please?
Can I borrow your newspaper , please?
Can I use your pen, please ?