He was so deep in thought,thinking of the problem ________ he knocked into the tree without noticing it.
When the cooking class changed to Thursday, I had to so that I could pick up my son from his piano lesson.
I'd appreciate if you would turn the radio down when I am reading.
I want to hear from her again, , we have been out of touch for more than thirty years.
Dress warmly, you'll catch cold You see the flu is spreading quickly, right?
I don't want to some argument about who is to blame,