---Why are you so worried?---I’ve lost the watch my dad bought me on my birthday.
Which of the following word matches the sound /'tɑ:sk /?
He wrote his ______ novel when he was ______.
—I don’t know when ______ tomorrow.—I will call you as soon as he ______.
—I’m sorry for stepping on your toes.— ______.
—______ a nice day!— ______.