Combine each sentences into a new one,using ''to+adj+for+pro/noun+to.V''
1.The sound is very low. We can't hear
=> The sound is too low for us to hear.
3. This table is very heavy. He couldn't move it
=> This table is too heavy for him to move .
4. The programme is very long. They can't broadcast
=> The programme is too long for them to broadcast.