--- Look! The plane is sending up signal “SOS”. It ________ be in danger.
—TV and computer are so popular these days. —Yes, they can______ our eyes to the outside world.
Jim has a ______. He is going to the USA to visit his sister.
The couple ______at this time yesterday. Nobody knew when they stopped.
Millie is______ clever a girl that she has worked out _______difficult math problems.
Did your father tell you ______?