2. The education of _______ young is always _______ hot and serious topic. A. 不填;不填, B. the; a C不填; the D. the; 不填
Ten professors______ the medical team to look into the cause of the disease.
What great trouble the boy _____his father to give up smoking!
“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
Anyone _______ bags, boxes, or whatever, was stopped by the police.
---Why did the policeman question Tom? ---He was ________of taking part in the killing.