--- Did you notice him come into the hall?--- Sorry, sir. I _______ with my friends online.
Our teacher said that light______ faster than sound.
Jack is _____ busy ______ he often forgets to have breakfast.
—Are you free this Sunday? — Yes. If it_____ , I will go shopping with mum.
Lily practises _______ the piano very hard.
Hurry up. There’s _____ time left.