班主任应具备哪些专业素养？

A. a. She went to buy some jam.
B. b. She couldn't drive.
C. c. There was too much traffic.
D. d. There was no bus.

A. a. At 3:15.
B. b. At 3:50.
C. c. At 5:30.
D. d. At 5:15.

A. a. Go away.
B. b. See Mrs Dole.
C. c. Sit down.
D. d. Go to the park.