Be careful . You _______ cross the road when the traffic light is red . The traffic is heavy at this time of day .
This is your pencil. ________ is over there, on the desk.
Doing morning exercises is good ________ our health.
He is going to study hard at math. He wants to be ________ engineer.
—Hi, Lucy. Your T-shirt is very nice. —____A. No, it isn’t nice. B. Thank you. C. You’re right.
—Is that girl Lucy Green? —Yes, ____.A. you’re right B. that’s OK C. he is