Why did many people fall ill made a lot of people fall ill.

A．The man is going to follow the woman.
B．The man is going to take two buses.
C．The man is going to get on a No.57 bus.
D．The man is going to find the right bus stop first.

A．Join her friend.
B．Stay inside.
C．Sketch the tree.
D．Look for a job.